Brand Name: SKY Model Number: SK-008 Style: In-Ear Communication: Wired Connectors: 3.5mm Use: Mobile Phone Function: Bluetooth,Noise Cancelling,Microphone Place of Origin: Guangdong China (Mainland) 6P: YES 16P: YES CE: YES Color: Black and White Usage: mobile phone ROHS: YES Support: customers' logo print and color available Package: blister or OEM customers' request Distortion: 2% Sensirivity: -58dB±3dB Packaging & Delivery Packaging Detail: 1pc/Blister Package or Color Box, Common Export Carton Delivery Detail: 20-25 days after confirming all Specifications Fashional Shape Bluetooth Headphone 1. Pretty cool appearance 2. CE & ROSH 3. Best price Fashional Shape Bluetooth Headphone Features:1) Special for all audio equipment2) Colors: Depends on the costomer's demand3) OEM BRAND4) Good sound quality5) High quality stereo earphones for MP3 /
Model Number: BHW02 Style: Headband Communication: Wireless Connectors: USB Use: Portable Media Player Function: Bluetooth,Noise Cancelling Place of Origin: Guangdong China (Mainland) Specifications 1:Private mould 2;colorfully 3:Play/Talk-10hours 4:Low battery notification Bluetooth 2ch Stereo Audio Headset BHW02Bluetooth stereo head set lets you listen to music or phone calls wirelessly.High-quality speakers deliver crisp, rich sound.Accept incoming calls or toggle between tracks with the touch of a button.Lightweight, comfortable design for all-day listening. Compatible with Bluetooth enabled devices, such as iPhone, iPad, most computers, cellphones.Frequency response: 20-20,000HzSpeaker Impedance: 32ohmOmni-directional high quality microphoneSensitivity microphoneTransfer Distance: 33FT/10MFrequency: 2.4GHzTechnology: Bluetooth V3.0+EDREasily Charge Via USB PortPlay/Talk-10hoursLow battery notification
Model Number: WK-100 Style: Ear Hook Communication: Wireless Connectors: Other Use: Mobile Phone Function: Bluetooth Place of Origin: Guangdong China (Mainland) color: Black/White Packaging & Delivery Packaging Detail: plastice bag, blister box,gift box Delivery Detail: Within 7 days after receiving the payment Specifications 1.Support 2 Mobile Phone 2.fashion design and 3,easy for your talking in busy. 4.Superior quality,good Voice Features 1. Small, lightweight and stylish2. Experience less vibration and more of your music3. The discreet acoustic tube ear piece is comfortable to wear and allows the user to have clear sound transmission without ambient noise and keeps incoming communication private4. Advanced technologies in Echo cancellation & Noise reduction ensure exceptional sound quality5. Support Bluetooth headset and hands-free headsetvoice promptmultipoint;connect with 2 phones and use at the same timeIn the iphone can show remaining power Specificat
Brand Name: S2 S3 Model Number: HM1500 Style: Headband Communication: Wireless Use: Mobile Phone Function: Bluetooth,Noise Cancelling Place of Origin: Guangdong China (Mainland) Packaging & Delivery Packaging Detail: gift box Delivery Detail: 1-2 working days after confirmed payment Specifications Luxury Design Wireless Bluetooth Stereo Headset Heart shaped Earphone Headphone for Universal Mobile phone S3 S2 lStylish clip-on headsetHM1500 is stylish clip-on design. Using a clip to attach the headset to your clothes, use a comfortable earpiece and microphone for the protection of privacy. lVibrationUse the vibrating alert for call notification in noisy environments or when your handset is on silent. lNoise reduction and echo cancellationEliminate unwanted background noise during calls with noise and echo cancellation DSP technology for crystal-clear conversation. lAdvanced multipoint-connectivity with two mobile phonesThe HM1500 boasts multipoint technology, allowing dir
Brand Name: OEM Model Number: CH117 Style: In-Ear Communication: Wireless Connectors: 3.5mm Use: Portable Media Player Function: Bluetooth,Noise Cancelling,Microphone Place of Origin: Guangdong China (Mainland) Name: Bluetooth headphone Feature: Bluetooth headphone Sensitivity: -38dB+/-3dB Driver Diameter: 40mm Impedance: 32 oHm Frequency Response: 20Hz-20kHz Input Plug diameter: 3.5mm Cord meter: 2m Net weight: 300g Sample: sample is avialable Packaging & Delivery Packaging Detail: blister inner vac tray color window box Different packeges for Bluetooth headphone Delivery Detail: 10-15days for Bluetooth headphone Specifications 1, Cheap portable bluetooth headphone 2,light weight .good feeling 3,Ergonomic ,slime disign 4,CE ,ROHS,FCC 5,Popular Big discount fashion disign cheap portable bluetooth headphone for music Bluetooth headphone Main Features:This headphone is light weight, extra comfort to use This stereo headset offers good feeling with vogue and
Specifications 1.Supports Bluetooth Headset and Hands-free Profile(HFP 1.5)2.Button design: MFB, VOL+, VOL-, FWD, REV 3.LED Indicator SPECIFICATION:1.Correspond With V2.1+EDR2.Support:HSP,HFP,A2DP,AVRCP3.Frequency range:2.4026GHz-2.480GHz4.Transmitting power:Class25.Working Distance Range:10m6.Charge Time:≤3.5 Hours7.Talk Time:≥12 Hours8.Musice Time:≥9.5 Hours9.Standby Time:≥165 Hours FEATURES:High quality speaker units for excellent sound experienceHigh quality leather earcapAdjustable headband for comfortable useWith volume controlExternal microphone optional. SERVES:1: Sample availability and policywe can provide free samples to you before your order.2: Guarantees:We assure the quality of your order same as the samples and delivery strictly follows the agreement.3. SupportAny inquiry will be replied by our professional staff. we will assist you shipment, insurance and others documents such as Form A, inspection certificate etc.4. after sales serviceWe wi
Specifications 1.OEM ODM Service 2.Factory direct price 3.Bluetooth 4.foldable 5.different colors Foldable wireless bluetooth headphone Parameter of bluetooth headphone : More pictures of bluetooth headphone : Four colors of bluetooth headphone: other headphone: Packing of mp3 player wireless headset : Packing Size of bluetooth headphone : 157mm(L)×83mm(W)×190mm(H) Contact us for more information on bluetooth headphone Ms Amanda LiSkype:amanda75290527 Tel:+86 13724565259(English) Amanda +86 13332655409(Chinese) Jason Email: market(@)winfire999.com.cn
Specifications KDB-808 colorful bluetooth Headset can make any color extisting different design for choose CE.ROHS,FCC,BQB KDB-808 colorful bluetooth Headset : Operating Instructions Calling operation: Receiving call: The cellphone rings when you are listening to music and there is implication sound. Conversation can begin as long as pressing the multifunctional power key.End the conversation:Method 1:Press the multifunctional key once to end the conversation.(Note:Press once only and do not press it for a long time.)Method 2:End the key of the mobile phone. The cellphone rings when you are listening to music, the headphone will switch from music player to connect the cellphone and the music will stop to play. When conversation ends up, the music will continue to play.Hang up call: In status of conversation, press the power key for about 2s, the call will be hang up with tone. Maintenan
Specifications A+++ quality,brand new,box packaging,factory price,good service,many different designs and model available,fast delivery!!! Dear friends,the products have logo and the products are in sealed box,if you are interested,please contact us,thanks!
Specifications Mono headset bluetooth headphones CD-615 factory price small and exquisite Mono headset Mono headset bluetooth headphones CD-615 It is a lightweight and comfortable stereo headset with a unique design and fashionable style. It has full metal body construction and its Bluetooth ringtone answering function allows headset to ring for incoming calls. You can make a direct phone call from your headset to most recent call by its recent call re-dial function. Moreover you can just push send button for a second to hold incoming calls, push it again to get back. When you listening to music, it will let you know your incoming calls by strong vibrating (as your cell phone's) from one side. Provides up to 5 hours talk time or 200 hours standby Specification: Mono headset Bluetooth version: V2.1+EDR Bluetooth model: Hands free/ Headset/ AV/ AV PCR profile Radio frequency: 2.4GHz
Brand Name: Avantree Model Number: BTHS-849-BLK Style: Headband Communication: Wireless Connectors: USB Use: Mobile Phone Function: Bluetooth,Noise Cancelling,Microphone Place of Origin: Guangdong China (Mainland) Specifications 1. high quality for music and calls 2. 18 hours music time 3. Wired option for low battery use 4. comfortable wearing Avantree Hive is a Bluetooth stereo headphone with MIC from the Avantree family. It delivers clear voice transmission for phone calls and high quality sound for music. And with 3.5mm audio jack, it provides corded option for non Bluetooth-enabled phones, MP3 players, etc. The Avantree Hive is stylish and comfortable for all-day comfortable use. * Bluetooth stereo headohone with mic* Enjoy wireless music and answer phones calls in crystal clear stereo sound.* Corded option for non Bluetooth-enabled phones, MP3 etc.* Long working time - up to 18 hours music / talk time.* Auto-connection, easy to use.* Comfortable wearing and secure ca
Brand Name: Shuerr Model Number: SER-HEB-021 Style: Headband Communication: Wireless Connectors: No Plug Use: DJ Function: Bluetooth,Noise Cancelling,Microphone,DJ Headphones, Computer, Mobile Phones, Skype, Mediaplayer Place of Origin: Guangdong China (Mainland) Color of the headband: Can be customized as Pantone Color Raw material of the headband: Plastic & ABS Leather Sheath: Can be customized as different level Logo Imprints: Can be printed on headband OEM Service: Is available Shape of the plastic casing: Can be square Usage: Computer, Portable Media Player, Mobile Phones, Smart Phones,etc Connection Plug: Nickel Electroplating or Gold Electroplating Certificate: CE, Rohs, FCC(if required) Packaging & Delivery Packaging Detail: PE Bag,Gift Paper Box,Plastic Case or other customized package Delivery Detail: About 25-30 days against you confirm the approval samples Specifications Wireless Headset Bluetooth Headphone 1.Excellent bass sound 2.Color can be customized 3.OEM is avai
Specifications wireless sport bluetooth headphones 1)Bluetooth 2.0 compliant,bluetooth headset,Earphones,Headphone AVRCP/A2DP stereo bluetooth headset headphoneNumber:GP0205055Feature:bluetooth stereo headset with microphoneBluetooth 2.0 compliant,bluetooth headset,Earphones,Headphone,AVRCP/A2DP Profile,for mobile phone,pc 1.Standby time:130 hours.2.Talking time:8 hours.3.Operation range:up to 10 meters.4.Battery:li-ion polymer 120 mah.5.Bluetooth 2.0 compliant.6.Frequency range:2.4GHz-2.48GHz.7.Dimension:65*25*22mm.8.Package size:24*14*5cm.9.Product weight:80g. Packing:
Specifications Bluetooth headset,foldable,with MIC,handsfree Support any audio players have Bluetooth system Bluetooth V2.1+EDR standards Features and Descriptions:Bluetooth headphone, foldableSupport any audio players which have Bluetooth systems, such as iPhone, iPad, Moblie phone, computer etc- Bluetooth V2.1+EDR standards:- Receiver range:10m;- Carrier frequency:2402MHz-2480MHz;- USB interference: High speed USB 2.0;- Battery: rechargeable lithium-ion battery;- Successive working time: about 12 hours;- Frequency response:20Hz—20KHz- S/N ratio:_82db;- Accessory: USB Charging Cable
Brand Name: OEM Model Number: B04 Style: Ear Hook Communication: Wireless Connectors: USB Use: Mobile Phone Function: Bluetooth,Noise Cancelling Place of Origin: Guangdong China (Mainland) size: 45*14*8mm weight: 7g material: ABS color: white,black packing: gift box Packaging & Delivery Packaging Detail: gift box Delivery Detail: 10-15days Specifications bluetooth version:V3.0+ EDR,. work range:10m. standby time:110 hours talk time:4 hours. charge time:2 hours Features:1.Iphone/iPad can indicates the power situation.2.It can connect two mobile phones at the same time,which has bluetooth function.3.Long pressing multifunctional key,it dials last call number.Short pressing multifunctional key,it is for playing music.4.Support audio stream.If you remove ear hook and use a stereo earphone to connect MP3,computer etc for enjoying music. 5.Making pairing automatically.Itself searches and connects bluetooth mobile phones in neighborhood.6.Package include:1pcs stereo earphon
Brand Name: Caidi Style: Ear Hook,wireless Communication: Wireless Connectors: Other Use: Mobile Phone Function: Bluetooth,Waterproof,Noise Cancelling Place of Origin: Guangdong China (Mainland) Bluetooth Version: all mobile Distance: 10m Battery: rechargeable Standby: 100 type: ear hook color: all Useage: all mobile Packaging & Delivery Packaging Detail: bulk packing, gift box packing, or as your request Delivery Detail: According to your order Specifications 1Wireless Mobile Bluetooth Headset 2Effective distance10M 3Low power comsumption 4Good quality and low price top seller Wireless Bluetooth Handsfree Headset for Mobile Phone * Hands-free* Super mini size* Easy to use* Universal compatibility* Reversible ear hook Bluetooth Versionall mobileOperating Distance10mBatteryBuilt-in rechargeableCharging PlugA/C chargerDimensions36mm*16mm*20mmHeadset WeightAround 5gVOIPSupportMultipoint TechnologyNoMusic Stream
Model Number: Bluetooth Headset BH320 Use: Mobile Phone Place of Origin: China Usage: Mobile Phone Packaging & Delivery Packaging Detail: Retail packing Delivery Detail: In 2 days Specifications 1) Bluetooth version: 1. 2 2) Frequency: 2. 4ghz 1) Bluetooth version: 1. 2 2) Frequency: 2. 4ghz 3) Operation range: 10m (33ft) 4) Talking time: Up to 6 hours 5) Standby time: Up to 200 hours 6) Charging time: 2 hours 7) Battery: Rechargeable Lithium Polymer 8) Support profiles: Handsfree and headset 9) Security: pairing, Encryption, Authentication 10) Chipset with echo and noise cancellation software 11) World class audio quality in even the noisiest environment 12) Quicker connection and reduced interference 13) Compatible with any brand bluetooth 1. 2 or 1. 1
Brand Name: tayogo Model Number: WBH9-WL Style: In-Ear Communication: Wireless Connectors: USB Use: Portable Media Player Function: Bluetooth,Waterproof,Noise Cancelling,Microphone Place of Origin: Guangdong China (Mainland) Color: Black/White/Blue/Yellow/Red/Pink Material: PP Wear Type: Headband Waterproof Rank: IPX8 Charge: USB rechargeable Play Time: Up to 6hours talking time Fuction: Bluetooth,waterproof,Noise free Bluetoothe Verstion: V2.1 Feature: swimming,spa,sauna,shower,ski Certification: CE&Rohs Packaging & Delivery Packaging Detail: customer package or neutral pacakge Delivery Detail: 7-15days Specifications wireless headphones wireless headset stereo bluetooth headphon hot selling 2013 wholesale 1.Bluetooth and waterproof Fuction wireless headphones wireless headset stereo bluetooth headphon hot selling 2013 wholesale &nb
Brand Name: mi.wow Style: In-Ear Communication: Wireless Connectors: 3.5mm Use: Aviation Function: Bluetooth,Waterproof,Noise Cancelling Place of Origin: Guangdong China (Mainland) color: black Packaging & Delivery Packaging Detail: Neutral packaging, plastic packaging, gift box Delivery Detail: 1-3days Specifications Hot Sale In Ear Bluetooth Headphone 1.Bluetooth Version: V2.0. 2.In-Ear Headphone. 3.Fast Delivery. 4.Welcome Inquiry. Hot Sale In Ear Bluetooth Headphone 1.Top Quality Bluetooth Headset with Microphone.2.High Defition bluetooth headset with impressive Hi-Fi sound.3.Can be easily connected to iphone,ipad,PC,cellphones etc.4.Remote playback control function:Answer call,End call, Redial,Voice Dial,Call Rejection.5.Enjoy talking with friends or business partners up to 3.5 hours. 6. Powered by long lasting, rechargeable lithium batteries. 7.Key Features: Volume /-,Pause/Play,Redial,Voice Dial,Call Rejection etc. 8.Impressive
Brand Name: tamgle Model Number: BT8040 Style: Ear Hook Communication: Wireless Connectors: 3.5mm Use: Mobile Phone Function: Bluetooth,Waterproof,Noise Cancelling Place of Origin: Guangdong China (Mainland) Compatible brand: iphone/Nokia/samsung/blackberry or other device with bluetooth Packaging & Delivery Packaging Detail: polybag/carton Delivery Detail: 7 days after receiving the payment Specifications Place of origin: China mainland Brand: Tamgle Compatible brand: iphone/Nokia/Samsung/blackberry etc Package: Polybag/carton wireless handsfree bluetooth headset Description: 1.Transmission distance: 10 meters2.Earphone weight: 10 grams3.Talk time: 6 hoursS4.Standby time: 200 hours5.Bluetooth version: 2.06.size: 39*18*12 mm Detailed introduction: 1. wireless play music2.basic design - weight less than 10 grams3.multipoint connection, could connect 8 equipments - could connected 2 devices at the same time.4."no Ear hook" wear - 3 kinds of the
Specifications 2012 new type bluetooth headphone fashionable design cheap price high quality colorful fashion design headphones gloosy finish 2012 new type bluetooth headphone fashionable design cheap price high quality Purchase now, you will have 5 usd each cut, 5% more discount if amount exceed 500 usd!!!! You cant just discount it for simply the following reasons: Advanced driver design for precise audio clarity • Extra large speaker drivers for super deep bass • High powered digital amplifier plays hip hop, rock, R+B and more loud, withoutdistortion • headphone cable with Quadripole™ twisted pair construction for balanced sound andclarity • Powered Isolation™ technology actively cuts external noise Sp
Brand Name: Midte Model Number: Q900 Style: In-Ear Communication: Wireless Connectors: USB Use: Mobile Phone Function: Bluetooth,Waterproof,Noise Cancelling,Microphone Place of Origin: Guangdong China (Mainland) OEM: yes LOGO: customerized Price: factory price Color: customerized Sample: Available Specifications in-ear bluetooth earphone Automatically switch between music and call Long standby time Muti-point connection OEM 2013 new product Bluetooh single earphone Specifications Model No. of Bluetooth Earphone Q900 Chip 6145 chip Supporting EditionBluetooth version: V4.0+EDR Frequency Range2.4GHz Bluetooth VersionV4.0 Other Compatible Versions V1.1, V1.0, V1.2 V2.0 Scope of Work 10 Mi Neipei Transmission Power of Bluetooth Earphone Class 2Transmission Distance About 10MSupport mode A2DP, Headset, Headfree Supported ModeBluetooth-enabled mobile phone, Tablet PC, laptop Talk / music playback time about 4
Specifications 1. HD bluetooth headphone with mic 2. Noise canceling 3. Original quality with all accessoriess 4. 6 colors can be chose Bluetooth stereo headphones : Color : black / white / red / green / blue / purple Here we have all series of these headphones and earphones , please send me email to ask for the catalog ! ! ! Total Freedom From Wires. This Wireless headphone deliver the great quality , without the cord getting in your way. Controls on the ear cup even let you switch tracks without pulling out your music player. When you want to change a song, use the controls on your ear cup to manage phone calls and music. Incredibly Clear Sound . The Wireless headphones feature powerful sound, as clear and strong as any wired headphone. They also come with a cable you can plug into if you don’t want to go wireless. Around 6 hours Battery Life. Longer b
Brand Name: Yes-Hope Model Number: BT-1302 Style: Headband Communication: Wireless Connectors: 3.5mm Use: Portable Media Player Function: Bluetooth,Noise Cancelling Place of Origin: Guangdong China (Mainland) Driver Unit: 30mm Frequency response: 20-22KHz Impedance: 32ohms Senstivity(at 1KHz): 115dB Max input power: 3.5mm stereo Packaging & Delivery Packaging Detail: polybag / gift box / blister card Delivery Detail: around 35 days receipt of deposit Specifications 1. Studio Headphone Mixer 2. Bluetooth headphone 3. Super sound quality, extra bass system 4. Suits for all audio * Hands-free Bluetooth stereo headphones* Headset with microphone, you can enjoy making phone calls and listening to music * Has buttons on the headphones for volume, next track and call answering controls* With built-in high capacity Li-polymer battery Product show: Package &nb
Specifications EX-01 Bluetooth Headset for P3 1)Exclusively designed for gaming 2)it's easily paired to your p3 3)color:black EX-01 BLUETOOTH HEADSET FOR P31)Exclusively designed for gaming2)it's easily paired to your p3 3)color:black EXCLUSIVELY DESIGNED FOR GAMINGThe EX-01 Wireless Bluetooth Headset has been exclusively designed for gamer and gaming,not mobile phones!So you can now maximise you game time without an irritating,uncomfortable earpiece ,and still hear your opponent creeping up behind you on your surround sound system! Not only is the EX-01 one of the most comfortable gaming headsets,it's easily paired to you p3 and intuitiv
Brand Name: VASUN Model Number: VASUN-BT-111F Style: In-Ear Communication: Wireless Connectors: wireless Use: Mobile Phone Function: Bluetooth Place of Origin: China (Mainland) Color: white,Black Packaging & Delivery Packaging Detail: *Each box: 100pcs *Outer package size: 53*34*46.5 CM *N.W: 8.00KG *G.W: 9.0KG Delivery Detail: One week Specifications 2013 Latest Ear hook bluetooth headset wireless 1,fashion style,competitive price 2.bluetooth headset 3.accept oem 2013 Latest Ear hook bluetooth headset wireless 1,fashion style,competitive price 2.bluetooth headset 3.accept oem Features: It can connect with 2 devices with bluetooth function simultaneously;with receive/hang up/reject a call,voice dialing,tail number redial,music play,volume control,iPhone show headset left electricity functions,use advanced digital signal processing(DSP) technology. *Version: Bluetooth V3.0+EDR*Support:A2DP,Headset,Hands-stereo*Talking time:3-4H*Standby ti
Brand Name: OEM Model Number: JF-B203 Style: Headband Communication: Wireless Connectors: Bluetooth Use: Mobile Phone Function: Bluetooth Place of Origin: Guangdong China (Mainland) color: red, blue, green, white, black, pink.. Packaging & Delivery Packaging Detail: 1PC/Polybag, 100pcs/ctn/:51*46*30.5cm G.W.: 13kgs N.W.: 12kgs Delivery Detail: 30 days after confirming order and sample Specifications 1.Stereo Bluetooth Headphone 2.Bluetooth vertion:v2.1+EDR class2 3.Work with mobilephone, laptop,new nano 4.Many color Stereo Bluetooth Headphone, Wireless Bluetooth Headphone for iPhone, mobilephone,new nano and table pc. * Stereo bluetooth headphone* Work with mobile phonesm new Nano, tablet pc* Bluetooth Specification v2.1+EDR class2* Talk / music time: up to 10 hours &n
Specifications Stylish design Flexible OEM service Good quality k802 Professional Bluetooth Headset size 56x 16 x 8.5 mm weight 8.9g Bluetooth Standard bluetooth V2.1 + EDR Frequency Range 2.4GHz Operation Class 2 Bluetooth Mode headset/handfree/A2DP/AVRCP Operating range up to 30 feet (10 metres) Talk Time up to 5 hours MP3 Playing Time up to 5 hours Standby Time up to 100 hours Charging Time 2-3 hours Charge Voltage input 110-240V, DC:output 5.3V Included Accessories:1.Micro USB charging cable2.Earhook 3.User manual &n
Specifications 1. Bluetooth Version: V2.1+EDR 2. Frequency range: 2.4GHz - 2.48GHz 3. Transmission power: Class 2 4. Talk time: 4 hrs H200 Super Mini Bluetooth Headset (Mono Channel) Black Introductions:The excellent cell phone headset allows you to make and receive calls while on the move or in the office conveniently. The headphone delivers high performance and remarkable sound for your cellphone. This cell phone earphone is lightweight and stylish, so that it can add more spices to your cell phone devices. The practical headset with super clear and hi-fi sound effects brings you the best listening experience. Just enjoy your music and calls with superb audio quality!Features:1. Small, lightweight and stylish2. Vibrant bass, vivid mid-range, and vivacious highs3. Experience less vibration and more of your music3. The discreet acoustic tube ear piece is comfortable to wear and allows the user to have clear sound transmission without amb
Specifications Bluetooth Headset for iPhone 5; High SNR; Hidden omni-directional Mircrophone; No wire,no transmitter,no software,no setup. High SNR Bluetooth Headset for iPhone 5 Sepecification Bluetooth 2.1 wireless transmission protocol Transmission distance and range(10m, 360°) High SNR Bluetooth audio connection No wire,no transmitter,no software,no setup, it is easy and fast. 5: Automatic Switch-over between calls and musicHidden omni-directional Mircrophone 7: Low power indicaterAdjustable headband and foldedWorking duration:15h,charging duration:4hHeadset Spec.: frequency response:20-20KHz,SRN:85dB,working Voltage:3.7V,current:30mA speaker size:Φ40mmMicrophone Spec.:100Hz~10kHz&SRN≥55dB&Sensitivity:-42dB