Brand Name: OEM Model Number: JDD2 Style: Ear Hook Communication: Wireless Use: Mobile Phone Function: Bluetooth Place of Origin: China (Mainland) Bluetooth specification: bluetooth V2.0 + EDR Support agreement: A2DP, Handsfree Transmission range: 3-5 m transmission Applicable models: all kinds of phone stereo: yes Standby time: 160 hours dual MIC noise reduction: yes warranty: 1 year Packaging & Delivery Packaging Detail: gift packing Delivery Detail: 1-3DAYS Specifications bluetooth headset bluetooth V2.0 + EDR 3-5 m transmission compatible all kinds of phones stereo:no bluetooth Model JDD2 Specification Bluetooth specification: bluetooth V2.0 + EDRFunction purpose: bluetooth headsetSupport agreement: A2DP, HandsfreeTransmission range: 3-5 m transmission frequency: 2.4 GHzApplicable models: all kinds of mainstream mobile phone modelsstereo:NoWeight: 9.8 gTime: 6 hoursStandby time: 160 hoursCell size: 401030Transmission power: class 2Product size: 4.5 * 1.5 * 1 comPacking
Brand Name: DGS Model Number: BE01 Style: Headband Communication: Wireless Connectors: ~ Use: Computer Function: Bluetooth,Noise Cancelling Place of Origin: Guangdong China (Mainland) Color: white, black, red, blue Carriers: DHL, HKpost, TNT, UPS, EMS, FedEx Type: Wireless Bluetooth Headset Welcome: Drop Shipping or Wholesale Items: Wireless Keyboard Packaging & Delivery Packaging Detail: Retail Package Optional Delivery Detail: Around 3-7 days Specifications New Fashion Bluetooth Headphone Earphone Headset For Mobilephone And PC Color: white, black, red, blue Material: Plastic Wholesale New Fashion Wireless Bluetooth Headphone Earphone Headset For Mobilephone And PC CE Certification Approved!!! Product Description: 100% Brand NewHigh capacity Li-ion battery, 200% longer talk time than normal Bluetooth headsets OD30mm speaker drive ;Flexible sound outputBluetooth 2.1V/A2DP built in Smart control panel design Foldable design
Brand Name: HZD or OEM Model Number: BT-200 Style: Headband Communication: Wireless Connectors: 3.5mm Use: all bluetooth device Function: Bluetooth,Noise Cancelling Place of Origin: Guangdong China (Mainland) Feature: Bluetooth Support: all bluetooth device working time: 12hours Sensitivity: 112db+/-3db Frequency responce: 20-20kHz Bluetooth standard: bluetooth V2.1+EDR charging current: 110+/-10mA working distance: 10m Carrier frequency: 2402MHz-2480MHz Standard: CE,ROSH,FCC Packaging & Delivery Packaging Detail: Poly bag / Blister packing / Box packing / OEM packing Delivery Detail: 10 days after receiving the payment information Specifications 1,Bluetooth headphone 2,built in lithium battery 3,10m working distance 4,12hours working time 5,OEM brand Bluetooth headphone BT-200 good quality Product Features: 1,Support systems:audio equipments with bluetooth functions2,Bluetooth protocol standards:Bluetooth V2.1+EDR 3,Receiver range:10m / 360Frequency R
Specifications NEW: Retractable Bluetooth Headset with Vibrator With incoming call alert and out of range alert Clip type headset with Retractable Headphone wireWork with all iPhone, Samsung, HTC, BlackberryCE, RoHS, BQB compliance A. Patent Retractable wire The earpiece cord can be extended by gently pulling on the cord and adjusting the length. The earpiece cord can be shortened by pressing the retract button.Guarantees at least 5,000 time for pulling and retracting B. Ringer and Out of range alert The headset will make a VIBRATION when - you have an incoming call, to prevent missing any important calls. - your mobile phone is out of range or left behind, being an out of range alert to reminds you C. TWO ways for wearing the headset - Clip onto the clothing - Wear it around your neck Special FunctionsLED Indicator for different statusMulti-point connection with two Bluetooth enables devicesAuto
Specifications bluetooth headphone 1)Extremely Competitive Price 2)Operating Distance:15m earmuff bluetooth headphone,An021 Features and specifications use the Internet to achieve long-range wireless two-way communication; wireless enjoy stereo music, set aside to answer the call automatically converted, high-fidelity, CD quality sound effects; remote control music playback status (remote control music playback, pause, up and down selections, volume control); High sensitivity, omni-directional microphone design, voice clarity, no echo;
Specifications Wireless bluetooth headphone for iPhone 5 1.Wireless Stereo Headset V 2.1 2.In-Ear Speaker 3.Nice pack 4.Fast ship Wireless bluetooth headphone for iPhone 5 *Bluetooth standard: V2.1+EDR*Signal Frequency: 2.4-2.48Ghz*Transmission power: class2*Function: Headset/AVRCP/A2DP Profile*Working range: 10M*Talk time: ≥3 hrs*Standby time: ≥ 70 hrs*Charging time: less than 3 hrs*Battery: Rechargeable 60mAh Li-Polymer Battery*Charger Power: Input 100-240 V AC, Output: 5V DC
Specifications bluetooth headphones 1,For iPhone,ipad,PC,PDA... 2,Foldable/compact 3,Standby:300hrs 4,2013 new bluetooth headsets bluetooth headphones , New Sport wireless bluetooth headphone, foldable bluetooth stereo headset Sport wireless bluetooth headphone 1,For iPhone,ipad,Tablet PC, PDA... and any devices with bluetooth function2,Foldable and compact 3,Standby:up to 300 hrs Features: *Bluetooth version 2.1+EDR, Class II*Bluetooth Profiles: HSP, HFP, A2DP and AVRCP*Demension:151*75*156mm*Talk time&music playing time: up to 12 hrs*Standby time: up to 300 hrs*Charging time:less than 3 hrs*Battery capacity: 120 mAh*Operation distance:10 meters*Chipset:CSR*Weight:106g*Frequency Response is 22-18000 Hz Packing info.: *Pcs/Ctn:20pcs/ctn*Ctn size:44*38*38cm*GW/NW:7.5kg/6.5kg*Q'ty/20':440 ctns; Q'ty/40': 940 ctns Accessories: Charger: 1pcUser
Specifications 2013 new type wireless bluetooth headset have faddish and cool colors memory pairing + echo cancellation stereo high quality 2013 new type wireless bluetooth headset /faddish and cool iphone headsetProduct features:1) bluetooth headset, head type wireless bluetooth headset, high quality, stereo.2 memory pairing /echo cancellation, music/speech automatic switching. Can be pairing and connection to all have bluetooth phone 3) clear dialogue, anytime, anywhere, enjoy your wireless free! Super easy super convenient feeling! Super quality ultra smooth enjoy!
Specifications Aminy bluetooth headset good quality bluetooth headset your preferred music headphones,double device to connect model number Aminy:M350.Version: V3.0+EDR.Mode: Hands Free/Headset.Frequency:2.4GHz.Transmit Power: Class 2.Support A2DP music playback IOSPower display Power saving mode suspended The sound add 1 drag 2 Connect two phones at the same time easily conversion .Range: 10M.Power: ACInput 110-240V, DC Output 5V.Talking Time:5H about.Standby Time: 100H about.appearance size: 47*18*10mm.Product Weight: 8g about
Brand Name: OEM Model Number: FM-BT03 Style: In-Ear Use: Mobile Phone Function: Bluetooth Place of Origin: China (Mainland) Packaging & Delivery Packaging Detail: Blister Package Delivery Detail: 2 weeks Specifications Bluetooth Headset 1.Noice & Echo cancellation 2.8 Hours Talking Time 3.10 Meter distance 4.180 Hours Stand By Time Bluetooth Headset FM-BT03Noice & Echo cancellation, 8 Hours Talking Time, 10 Meter distance, 180 Hours Stand By Time Bluetooth specification: V2.0 versionBand: ISM 2.402-2.480GHz) RF output power: -6 ~ +4 dBm RF sensitivity:>-75dBm Effective distance: 10 MTalk time: 480 minutes Standby time: 180 hours Battery: Rechargeable lithium batteries Power Transmission: SBCMax200kbps, 48.000kHz, 16bit Quality specifications: mono Temperature range: -10 to 45 degrees Celsius Audio output: (RL = 32ohm) 2.5mW Audio range: 20 Hz ~ 22kHz Charging time: (2 ± 0.5) hours Configuration: Bluetooth headset / charger / brochures / 2 panels can b
Brand Name: MINDSONIC Model Number: BTSHS-203 Style: Headband Communication: Wireless Connectors: USB & 3.5mm Use: Mobile Phone Function: Bluetooth Place of Origin: Zhejiang China (Mainland) color: black & white certificate: CE,ROHS Packaging & Delivery Packaging Detail: color box Delivery Detail: 30days Specifications Bluetooth Headphone Bluetooth 2.1+ EDR With built-in microphone Rechargeable lithium battery Neckband design Bluetooth Headphone Specifications:Working Frequency: 2.4GHzReceiving range: 10m, class 2Modulation: GFSKTransmitter power: 4dbmHeadphone-Frequency Response: 20~20K Hz-S/N ratio: >78dB-Distortion: <0.1%-Working voltage: 3.3~4.2V-Speaker size: 30mm-Speaker impedance: 32 OhmsMicrophone:-Size: 6mmx1.8mm-Impedance: 2.2K Ohms Features:Bluetooth 2.1+ EDRWith built-in microphoneUsing lithium battery, playing time up to 8 hours, standby time around 100 hoursFoldable design for easy carrying.Compatible with all Bluetooth enabled devices such a
Brand Name: KD Model Number: S009969 Style: Headband Communication: Wireless Connectors: 3.5mm Use: Computer, MP3, MP4, Phone and so on Function: Bluetooth Place of Origin: Guangdong China (Mainland) Weight: 80 gram Volume: 14cmx10.5cmx3.7cm Packaging & Delivery Packaging Detail: In reel Delivery Detail: Within 3-5 work days Specifications Bluetooth Headset with Charger Weight: 80 gram Volume:14cmx10.5cmx3.7cm Bluetooth Headset with ChargerSKU:S009969- Talk up to 4hours-Stand by Time up 70 hours-Light weight 5.6g-Auto-detectable,Auto matic Pairing-ready when powered on -Sleek and minimastist design Reference Pictures:
FOB Price: US $52 - 80 / Piece Port: shenzhen Packaging & Delivery Packaging Detail: retail Delivery Detail: 2days Specifications 2013 High quality Syllable wireless bluetooth headphone DJ headset,solor headphone stereo headphone Quick DetailsBrand Name: OEM,loop Style: Headband,headphone Communication: Wireless,wireless Connectors: 3.5mm Use: MP3/MP4/DJ/audio player Function: Bluetooth,Noise Cancelling Place of Origin: Guangdong China (Mainland) model number: noise cancelling connector: 3.5mm quality: grade A cable: PVC/TPE/Fabric color: black/ white/red/purple/blue/green price: comepetitive price Packaging & DeliveryPackaging Detail:polybag / gift box / blister card/customized packagingDelivery Detail:1-2days after confirming the payment Specifications 1.custom color available2.high quality sound and headband3.embossed logo artwork4.5years manufacturing experience 2013 High quality Syllable wireless bluetooth headphone DJ headset,solor headphone stereo headphone 1.Stereo sounds,
Brand Name: Hysun Model Number: H1 Style: Headband Communication: Wireless Connectors: V2.1 Use: Portable Media Player Function: Bluetooth,Noise Cancelling Place of Origin: Guangdong China (Mainland) Version: V2.1 Bluetooth range: 10M Talking time: Up to 10hours Standby time: Up to 50hours Charging time: 2.5hours Carrier frequency: 80Hz-20KHz Material: ABS+PVC Color: Black, white OEM service: Yes Packaging & Delivery Packaging Detail: PP polybag or according to customer's requirement Delivery Detail: 25-30 days after 30% TT received Specifications Best quality bluetooth headphone supplier, stereo bluetooth headset 1.Bluetooth V2.1+EDR 2.Top quality 3.Slim design 4.OEM Best quality bluetooth headphone supplier, stereo bluetooth headset Model No.: H1 Features: DescriptionBluetooth stereo headphoneDesign*Super Simple and fashionable appearance
Brand Name: YANMAI Model Number: 990 Bluetooth Style: Headband Communication: Wireless Connectors: USB/3.5 Use: Mobile Phone Function: Bluetooth,Noise Cancelling,Microphone Place of Origin: Guangdong China (Mainland) model: 990 Bluetooth functions: bluetooth/wired headphone protocol standard: bluetooth V3.0+EDR Speaker size: 40mm(Dia.) Impedance: 32 Ohms Frequency response: 20Hz~20KHz standby time: 200 hours battery: rechargeable 350mAh Operating distance: 10m (Max.) appearance color: black/white/red/orange Packaging & Delivery Packaging Detail: color window gift box Delivery Detail: 30 days after 30% T/T deposit Specifications 2013 new stylish design hifi stereo sound quality bluetooth v3.0+EDR standby time 200 hours colorful appearance newest design hifi stereo bluetooth headphone 990 series Product Features1. Hi-fi stereo wireless bluetooth transmission2. Built-in EQ equalizer3. High anti-interference antenna4. Built-in large capacity rechargable lithium battery5.A
Specifications Bluetooth headset production factory wireless bluetooth headphones 1.Talking time 5.5H 2.Battery recharge time 1-2H Bluetooth headset production factory wireless bluetooth headphonessoftware for NK Feature:1.Talking time 5.5H2.Battery recharge time 1-2H3.Warranty 1 yearDetails:wireless mini headset for mobilegood sound qualityOEM service&good priceFeature:Elliptic design: Fashion, Lightweight Specially designed hard back cover for mobile bluetooth Headphone jack and charging opening and camera opening Easy to take off or install it. No need any toolsHang design:more convernient for woking, sporting etc.Standard 3.5mm earphone jackVoice activated dialingLow voltage alarmbluetooth headset Handsfree SpecificationV2.1+EDRBluetooth ProgramISSC+Class2ModelHandsFree/HeadsetWireless Frequency Range2.4GEnvironment Temperature-20/+60°CStandby Current≤2mABattery Capacity48mA/hStandby time120 hoursTalking ti
Specifications Adavantages: Providing you fresh enjoying of beautiful sound.Its elegant and comfortable design makes it ideal for you. Newest bluetooth earphones with mic and volume control Specification:
Specifications - Bluetooth Stereo Headphone - S1000 - Stereo Bluetooth headphone for iphone - Supports Bluetooth A2DP, AVRCP - CSR Main chip Bluetooth Stereo Headset for iphone- S1000 [Features]- Stereo Bluetooth headphone with back-hang style- Supports Bluetooth A2DP, AVRCP, and HS/HF profiles- Features CVC Software echo/noise cancellation for reducing noise - Wirelessly enjoy stereo music from all A2DP-enabled devices, such mobile phones, PDA, PC etc - Switch automatically from remote controls on the headset allow you to play, skip and select your music tracks.- Up to 20 hours of music playback time [Specification]- Bluetooth Specification v2.1+EDR class 2 - The latest version of A2DP1.2 and AVRCP1.0 profiles support- Supports Bluetooth Headset and Hands-free Profile(HFP 1.5)- RF Frequency Range: 2.402-2.480GHZ, 2.4G ISM band- Radio Performance: Receive Sensitivity of -90dBm, TX Power Max 4dBm- Frequency Response: 20 Hz - 20 KHz, Very high Signal to Noise Ratio (SNR):95 D
Specifications 1.Mini bluetooth stereo headset 2.Bluetooth V3.0 3.Support voice prompt 4.It can convertible between mono and stereo stereo music bluetooth headphone with multipoint function Specification: Bluetooth VersionV3.0Operating Distance20mBatteryBuilt-in rechargeable li-polymer batteryCharging PlugAC chargerDimensions56*16.7*8.5mmHeadset WeightAround 8.3gVOIPSupportMultipoint TechnologyYesMulti-function Button On/OffYesStandard Bluetooth FeaturesYesStandby Time (hrs)150Supported ProfilesA2DP,HSP and HFPTalk Time (hrs)5In the Box1xStereo convertible headset1xMicroUSB charger1xearphone1xUser manualOther SpecificationsCompatible with Bluetooth enabled mobile phone, laptop, PSP.Easy to use it answering/ending/rejecting calls. And voice dialing (mobile supported). Put the call on hold and transferring calls.
Specifications wireless/bluetooth headphone headphone,high definitio music/gaming, high comfort experience natuaral quality music Fashionable wireless/bluetooth headphone wireless/bluetooth headphone With it, creat a pure music world wherever you go!!!!!!! You cant just discount it for simply the following reasons: all the insanes of headphone tapping onto itamazing price and quality ratio you cant find elsewheretotally a masterpiece no matter the workmanship or designPopular in EU-US area,leading the latest trend of earphone field Specifications Plug3.5mmImpendance32Ohms+/-15%Sensitivity108dB +/-3dbFrequency20-20000HzCable1 music cable 1 mic cable.Speaker40mm diameterColoryellow, blue, green, Oringe, red, purple, pink Product characteristics OEM & ODM Project acceptableall the portable players compatible various colors for option black
Brand Name: netphone Model Number: DK118-1000,DK118-1000 bluetooth headphones Style: Headband Communication: Wireless Connectors: Other Use: Mobile Phone Function: Bluetooth,Waterproof,Noise Cancelling Place of Origin: Guangdong China (Mainland) wireless: bluetooth distance: 1000m work for: motocycle,bicycle,mp4,gps work speed: 120km/hour talking time: up to 7 hours waterproof: yes OEM: yes Certificate: CE,FCC,Rohs, Patent Stock: 1000pcs Packaging & Delivery Packaging Detail: Colorful gift box Package Dimension: 215*160*60mm Package Weight:0.36kg PCS/CTN:30PCS Carton measure:440*490*290mm G.W/CTN:11.6kg Delivery Detail: stock for 1000pcs Specifications 1> 1000m Wireless Bluetooth Headphones 2> work speed reach to 120km/hour 3> up to 7 hours talking time 4>moto walkie talkie OEM 1000m Wireless Walkie Talkie Wireless Bluetooth Headphones Main Features:Maximum talking range 100/500/1000 meters between two riders, real two- way wireless communication between t
Model Number: GF-BTH-018 Style: Ear Hook Communication: Wireless Use: Mobile Phone Function: Bluetooth,Waterproof,Noise Cancelling Place of Origin: Guangdong China (Mainland) Packaging & Delivery Packaging Detail: Blister packing Delivery Detail: 1-2days Specifications 1). Either the ear hook or the ear pulg 2). Support bluetooth headset,handfree profile 3). Redial the last call ,Reject call Features:1). Either the ear hook or the ear pulg.2). Support bluetooth headset,handfree profile3) .Redial the last call ,Reject call.4). Volume adjustable.5). LED indicates connection.6). Faster connecting, clear sound, anti-interference7).On-line chat through Bluetooth wireless transmitter Specification:1) Bluetooth protocol: version 2.0 2) Frequency: 2.4 GHz 3) Bluetooth range: 10meters. 4) Net weight: 5.2g5) Power supply:DC5.1V/120Ma6) Working volt: 3.7V7) Battery: rechargeable Li-Ion battery Talking time:up to 3 hours Standby time:
Specifications 1.mp3 headphones 2.good feeling 3.many colors for option 4.suitable for sport beat use 5.OEM service Advantages : Factory price high quality wireless headphones1.Fashion design, various colors;2. Competitive price and high quality for mass purchase.3. Customized package as you required.4. In-ear design for noise cancelling.5. Enjoy the natural melody.6. Your own design can be manufactured, too7. Never hurt ears.8. Sells to all over the world. (Main market: America, UK, Europe, Middle East) Specifications: *Unit Size:200x165x35mm *Wireless Stereo Bluetooth Headset *Bluetooth:V2.1+CSR *Range 10meters
Specifications fashionable and simple design foldable design,easy to take away. Bluetooth Chip: CSR 2.1Bluetooth Profile: A2DP,AVRCPOperation Distance: up to 10 MRechargeable lithium ion battery: 3.7V 180mAhPlayback time: 7-8 HoursCharging time: 2-3 HoursFrequency Response: 50HZ-20KHZS/N Ratio: >=95dBInput Sensitivity: 600mv RMSDistortion: <=1.0% Battery Capacity 180mAhBattery Voltage 3.7VUSB input Voltage 5VPlayback time 8 hours Compatibility Including: -Apple IOS 4.0 version above(iPhone 5 & 4S & 4 & 3GS)(New iPad & iPad2 &iPad)(iPod Touch 4 ) -Nokia Symbian S60 (V3.0, 3.1 or 3.2) OS -Windows Mobile (6.0 and later) OS Current we use Gift color box. Pls email us for details and packing liOrder Qty over 3,000 pcs. We can customize your packaging.Pls contact us to set the details Our R&D team can meet your specific function requests of the products. So pls let us know your ideasWe also like to introduce our ne
Specifications for iphone 5 Bluetooth headphone Handsfree Headset competitive price test before shipping 100% work fast delivery for iphone 5 Bluetooth headphone Handsfree Headset Features :100% Brand NewGreat Bluetooth Headset with Bluetooth v3.0Extra earphone included allowing you to listern to musics in stereoLong if battery, good receptions Specifications:Color: Black whiteBluetooth Version: V3.0 +EDRTalk Time: Up to 5 hoursRecharge Time: Within 2 hoursSupport Profiles: Headset, Handfree, A2DPPower Source: Built in rechargeable Li-ion batteryMusic Play : Up to 3-5 hoursStandby: Up to 48 - 96 hoursUS Spec Charger included, also chargable with any micro-usb lead/charger
Specifications 1.wireless bluetooth headphones 2.Bluetooth V3.0+EDR 3.Support mobile phone call music play 4.High quality last for 11 hours Hotselling colorful wireless bluetooth headphones Description: 1.Bluetooth stereo head set let you listen to music or phone calls wirelessly2.High-quality speaks deliver crisprich sound3.Accept incoming calls or toggle between tracks with the touch of a button4.Lightweight,comfortable design for all-day listening.5.Compatible with bluetooth enabled devices, such as IPHONE,IPAD,most computer,cellphones6.Frequency response:20-20,000Hz7.Speak Impedance:32 ohm8.Omni-directional high quality microphone9.Sensitivity microphone10.Transfer Distance:33FT/10M11.Frequency:2.4GHz12.Technology:Bluetooth V3.0+EDR13.Easily charge via USB port14.Play/Talk-10Hrs15.Low battery notification Specification: Model noBH-02Ver.Bluetooth V2.1+EDRBluetooth ProfilesHSP,HFP,A2DP,AVRCPEffective Range10MetersMusic&nbs
Specifications It displays caller name and caller ID, very convenient Automatically echo processing Mobile Phone Dialer Dial-Up Stereo Bluetooth Headset Headphone
Specifications 2013 New High Quality Wireless Mobile Bluedio S60 Bluetooth Headset Earphone Headphones Handsfree for cell phone 2013 New High Quality Wireless Stereo Bluetooth Headset Bluedio N76 Super Mini & Chic Lightweight Bluetooth Headset (Russia customer,when you put order ,please put in your full name,thanks very much!) S60 is introduced into the market with the Bluetooth V3.0, long standby,voice prompt&low radiation. Besides all these, the mirror cover is another sparkling feature of S60. After a meal,or onthe way to an appointment,no time to tidy up? No problems,take Bluedio S60 out, not only givesyou a convenient call,but also is your mirror,keep you in a good manner at all times. SpecificationsBluetooth Version:3.0Operating Distance:10mBattery: Battery Built-in rechargeable li-on polymer batteryCharging Plug:A/C charger,Micro-USBHeadset Weight:around 5gSize:53*17*25mmVOIP:SupportMultipoint Technology:YesMusic Streaming: YesMulti-function Button On/Off:Yes
Specifications Hi-Fi stereo bluetooth headset 1.support multipoint pair(connect 2 devices simultaneously). Hot Products: Hi-Fi stereo bluetooth headset 1. support multipoint pair(connect 2 devices simultaneously). 2. Block external noise excellently, with built-in CVC to offer clear conversation effect. 3. Bluetooth chipset: CSR BC5 V2.1+EDR 4. Support A2DP,AVRCP,Headset,Headfree profile. &nbs
Style: In-Ear Communication: Wired Connectors: 3.5mm Use: Portable Media Player Function: Bluetooth,Waterproof,Noise Cancelling Place of Origin: China (Mainland) color: black Packaging & Delivery Packaging Detail: boxed Delivery Detail: 2-5 workdays Specifications 1. with superior bass 2.outstanding appearance 3. 1 year warranty 4. with packaging hot wireless bluetooth headphone for studio using headphones for studio using, bluetooth headphone , wireless earphone Features:1.stereo earphones with superior bass2. with revocable cable3. wonderful music experience4. With outstanding appearance in the street5. 1 year warranty Technical informations:Frequency response:19-20KHzImpedance:16ohmsImpedance :120db