Brand Name: Meidio Model Number: MN-1040 Style: Headband Communication: Wired Connectors: 3.5mm Use: Computer Function: Noise Cancelling Place of Origin: Guangdong China (Mainland) Sensitivity: 115+/-3dB Max input power: 40MW Impedance: 32ohms Type: Closed-back dynamic Cable: 1.2M(fabric) Color: Customized colors welcomed Logo: Customized logo welcomed Company: TUV manufacturer Service: ODM,OEM Packaging & Delivery Packaging Detail: color box, standard package Delivery Detail: 5-7days Specifications cheap wireless headphone high quality competitive price fast delivery customized color and logo welcomed bluetooth earphone 1.Type: Closed-back dynamic2.Driver Diameter: 40 mm3.Magnet: Neodymium5.Cable: 1.2M(fabric)6.Connector: 1/8-inch (3.5 mm) 7.Color:ALL color is available 8.Logo: print as your ruquire &n
Brand Name: Zealot Model Number: B-370 Style: Headband Communication: Wireless Connectors: 3.5mm audio cable or USB cable Use: Portable Media Player Function: Noise Cancelling Place of Origin: Guangdong China (Mainland) Color: Black+Orange Shape: Headband Material: Plastic File formats: MP3/WMA/WAV Additional Features: FM Radio Packaging & Delivery Packaging Detail: 195g/piece,50 pieces/carton,75cm*47cm*36.2cm,16.2kg/carton Delivery Detail: 7-10 days after payment Specifications 1.Bluetooth headphones 2.Play mp3 music from Micro SD 3.Rechargeable battery 4.High stereo 5.fm function Features *Bluetooth function,connect with laptop/mobile. *Rechargeable battery,convenient and practical *3.5mm audio input general port,and can be used for other audio equipments *Play TF card stored in MP3/WMA /WAVfiles*High quality speaker and sound cavity design,ensure high fidelity.CD quality effect.*FM functionProduct parameters*support the computer system:win 20
Specifications stereo wireless bluetooth headphone Elegant Fashion Design High Acoustic Fidelity CE/RoHS wireless bluetooth headphone stereo wireless bluetooth headphoneElegant Fashion Design High Acoustic Fidelity CE/RoHSwireless bluetooth headphone stereo wireless bluetooth headphone Product Description1. Bluetooth headphone 2. 10m 360 degree range with no cords 3. Folding wireless headphone 4. Hidden omni-directional Microphone Wireless bluetooth headphones for laptop iPhone, Samsung, Nokia 1: Bluetooth 2.1 wireless transmission protocol 2: Transmission distance and range(10m, 360° ) 3: High SNR Bluetooth audio connection 4: No wire, no transmitter, no software, no setup, it is easy and fast. 5: Automatic Switch-over between calls and music 6: Hidden omni-directional Mircrophone 7: Low power indicater 8: Adjustable headband and folded 9: Working duration: 15h, charging duration: 4h 10: Headset Spec
Specifications -Bluetooth headset, the world's first clip-on -Calling up reminder -Ultra-long standby,5 days -Clip-on style -ear-hook style Bluetooth Headset ,the world's first clip-on, calling up reminder -Appliant to Version 2.0-Transmitter Power: Class 2-Operation Distance: Within 10m-Embedded rechargable Li-batteries:300mAh-Charger output Spec.: 5.0V(300mA)-Normal charging time: 1~2 hrs-Calling time: 4 hrs-Music Time: 6 hrs-Standby time: 110hrs-Headset Size: 47*17.5*28mm-Weight: 10.8 g
Brand Name: for LG Model Number: HBS730 Style: Ear Hook Communication: Wireless Use: Mobile Phone Function: Bluetooth,Microphone Place of Origin: Guangdong China (Mainland) Packaging & Delivery Packaging Detail: Standard Package Delivery Detail: 3-7days Specifications LG Tone+ delivers enhanced audio and bass response and a host of calling features in a sleek, comfortable design SpecificationLG Tone+ delivers enhanced audio and bass response and a host of calling features in a sleek, comfortable design Built in apt-X technology reproduces CD quality sound over a Bluetooth connection 10 hours of listening/15 hours of talk time provide all day connectivity Text Message reading through LG's BT reader Application for Android OS Unique, around the neck, wearing style provides all day comfort and ease of use FeaturesNoise reductionEcho cancellationText to speech***Multipoint connectionCall waiting*Call reject*Auto reconnectVoice activated dialing*Last number redialEasy pairin
Specifications 1.talking time :3 h 2.standby time :120h 3.transmitting distance :10m 4.Bluetooth Version :v3.0 5.chip:CCMIC new smallest wireless bluetooth headset for samsung Specifications: Brand NameJPModelJP-BH99AInterface TypeUSBStyle in-ear/hear hookproduct size35*15*10mmProduct NW8gUnit Packing size167*83.5*40mmProduct GW54.4g Features and Advantages:1. Fashionable looking ,Ultra Slim and Ultra Smart Design . Removable type ear hook Products through bluetooth BQB certification2. small size and light weight make you to convenient to use 3. Three different sizes of ear plugs, wearing more comfortable 4. Technology digital signal processing - DPS. 5. Memory matching + echo elimination + voice dialing 6. support all of the mobile phone 7. the bluetooth version 3.0,8. signal sending interval extending to 0.5 seconds, chip workload greatly reduced
Specifications Bling bling earphone/bluetooth headsets 1.Good quality with reasonable price 2.High Acoustic Fidelity Bling bling earphone/ bluetooth headsets Namebling bluetooth headsetsFrequency Response20Hz-20KHzSensitivity108dB±3dB S.P.L at 1kHzImpedance32ohm±10%Plug Type3.5mmOutput10MWDiamondSwarovskiDiamond Size3.0mm /SS12Weight150g/PCLogoCan be PritedPacking1pc in a OPP bagMOQ1200 PCSample day5-7DaysDelivery day15-30Days more details about the earphone .....this way pls!!!
Brand Name: Qosun Model Number: BT278 Style: Ear Hook Communication: Wireless Connectors: Bluetooth Use: Mobile Phone Function: Bluetooth Place of Origin: China (Mainland) Bluetooth version: 3.0 or V2.1 +EDR , Class II Packaging & Delivery Packaging Detail: Pcs/Ctn:100pcs/ctn Ctn size:45.5*34*35cm GW/NW:11.5kg/10.5kg Q'ty/20': 490ctns; Q'ty/40': 1045ctns Delivery Detail: 5-15 days upon receipt of your confirmation order Specifications bluetooth headset Bluetooth version 3.0 or V2.1 +EDR , Class II Bluetooth Profiles: HSP, HFP, A2DP and AVRCP bluetooth headsetBluetooth version 3.0 or V2.1 +EDR , Class II Bluetooth Profiles: HSP, HFP, A2DP and AVRCP Talk time&music playing time: up to 4.5 hrs Standby time: up to 70 hrs Charging time:less than 3 hrs Battery capacity: 90 mAh Operation distance:10 meters Chipse
Brand Name: Roofull Model Number: Bluetooth Headset V4.0 Style: In-Ear Communication: Wireless Use: Bluetooth devices Function: Bluetooth,Microphone Place of Origin: Guangdong China (Mainland) Working range: 10M Talk time: ⥠5-6 hrs Standby time: ⥠120 hrs Charging time: less than 3 hrs Battery: Rechargeable Other Products: Sunray, Vu+, Openbox,Skybox Skype: earnwisdom005 Packaging & Delivery Packaging Detail: 1*Bluetooth headset+1*Charger+1*Ear hook +1*Earphone +1*Product manual Delivery Detail: 1-2 days Specifications Bluetooth Headset V4.0 1>In-Ear design 2>Easy operate buttons 3>Super sound quality 4>Use for bluetooth devices Universial Bluetooth Headset/Headphone/Earphone V4.0 for Mobile Phone/Ipad/Computer/PS3/Tablet Features: 1>In-Ear design 2>Different communications experience 3>Easy operate buttons 4>Bluetooth V4.0 supporting 5>Compatible with any bluetooth supported devices, like Mobil
Specifications 1.stereo Bluetooth v3.0 2.Smart connection; 3.Rechargeable battery system; 4..Built-in Mic Sports MP3 Player with TF card slot -Headset Handsfree Headphones TF card support,bluetooth built-in, mp3, headphone, telephone, EQ Specification( bluetooth part) Bluetooth Headphone with TF card MP3 player1. stereo Bluetooth v3.02. with tf card mp3 player3. high quality stereo bass sound4. Built-in rechargeable Li-ion battery5. accessory: USB cable, audio cable Specification(mp3 part)Audio format support: MP3/WMA/WAVExternal memory enlarge: TF card( Max 8G)Play time: continue about 10 hoursUSB Jack: USB 2.0Frequency response: 20Hz~20kHzOutput power: 15mW*15mWRecord sampling rate: 64Kbps/8KHzRecord format: WAV Hardware specification definitionSolution Transmit powerClass 2, Max4 dBmReception sensitivity-88dbm(typical)Working Band2.4G ISM Band,2.402-2.480GHzModulation systemGFSK,π/
Brand Name: USBONLINE Model Number: USWH0019 Style: Headband Communication: Wireless Connectors: USB Use: Portable Media Player Function: Bluetooth Place of Origin: Guangdong China (Mainland) Color: Grey Packaging & Delivery Packaging Detail: Gift box/ OEM Delivery Detail: 2 to 7 days when confirm the order Specifications Best wireless bluetooth headphones 1 SD card wireless music headphones 2 Two year warranty 3 Excellent experience Best wireless bluetooth headphones SD card wireless music headphonesFetures:1.Advance wireless music headsets provide portable,3D sound and high-quality of subwoofer enjoyment.2.No need to connect any cable and just simply insert the SD card,you can play your favorite music.
Brand Name: XSound Model Number: AK-XsoundBTH Style: Ear Hook Communication: Wireless Connectors: 3.5mm Use: Mobile Phone Function: Bluetooth,Noise Cancelling Place of Origin: Guangdong China (Mainland) Color: Black/Silver Packaging & Delivery Packaging Detail: Neutural Package Delivery Detail: Within 3 Days Specifications 1.Fashionable Noble Design 2.High Quality Stereo Music Sound Feeling 3.2012 The Newest Lastest Bluetooth Headphone Document No.:XSOUND-H1-010 Version:R1.0 Date:2012-5-15 PRODUCT SPECIFICATION FOR H1 1 General This document describes a Bluetooth stereo headphone H1. The unit consists of: 1) 1 Bluetooth headphone (Bluetooth chipset BC5 ROM based PCBA with Charge connector/ MFB/Volume up (next song)/Volume down (previous song)) 2)&nb
Brand Name: WF Style: Headband Communication: Wireless Connectors: USB Use: Portable Media Player Function: Bluetooth Place of Origin: Guangdong China (Mainland) speaker: 40mm Frequency response: 55Hz-20KHz Specifications 1.OEM ODM Service 2.Factory direct price 3.Bluetooth 4.foldable 5.different colors Foldable wireless bluetooth headset Parameter of bluetooth headset : More pictures of bluetooth headset : Four colors of bluetooth headset : other headphone: Packing of bluetooth headset : Packing Size of bluetooth headset : 157mm(L)×83mm(W)×190mm(H) Contact us for more information on bluetooth headset Ms Amanda LiSkype:amanda75290527 Tel:+86 13724565259(English) Amanda +86 13332655409(Chinese) Jason Email: market(@)winfire999.com.cn
Brand Name: OEM Model Number: C01484 Style: Headband Communication: Wireless Connectors: Other Use: Portable Media Player Function: Bluetooth,Noise Cancelling Place of Origin: Guangdong China (Mainland) Charger specifications: DC5.0V 300mA Listen time: â¥16 hours Packaging & Delivery Packaging Detail: Paper Packaging Delivery Detail: 3-7days Specifications Wireless Bluetooth Headphone 1.Transmitting Power: Class 2 2.Frequency Range: 2.4026 GHz-2.480 GHz 3.Color: Black HOT! SX-907 Wireless Bluetooth Headphone (C01484) Features:1.Wirelessly transmitted stereo music via Bluetooth Adapter.(acoustics devices like for iPOD,for PSP, MP3,Hi-Fi).2.Support A2DP mobile phone, the mobile phone can be transmitted stereo music directly. No need the Bluetooth Adapter.3.With foldable and comfortable headset you can keep enjoying for long time4.Bluetooth headset designed with 2 purchase of hi-precision speaker,superior sound, powerful bass systemSp
Brand Name: oem Model Number: Headset Style: In-Ear Communication: Wireless Connectors: USB Use: Computer Function: Bluetooth,Waterproof,Noise Cancelling Place of Origin: Guangdong China (Mainland) Function:: Bluetooth headset Packaging & Delivery Packaging Detail: OEM package Delivery Detail: 5-7day Specifications 2012 the newest microphone speaker bluetooth headsets 1. The high quality service, the good price. 2..Excellent quality, high 2012 the newest microphone speaker bluetooth headsets Model No: BH-402 FEATURES:
Brand Name: SAWOLOL Model Number: HEP-001B Style: Neckband Communication: Wireless Connectors: USB Use: Mobile Phone Function: Bluetooth,Noise Cancelling Place of Origin: Guangdong China (Mainland) Packaging & Delivery Packaging Detail: bubble bag and paper box Delivery Detail: 7-15 days after order confirmed Specifications 1. Bluetooth headphone 2. Back-neck design headphone 3. Take phones 4.Chargeable lithium battery 5. wireless Stereo Bluetooth Headphone Sports-style headphone,it's specially for your use when you are doing sports.- Back-neck, foldable design- Appliant to Version 2.0 - Transmitter Power: Class 2- Operation Distance: Within 10m- Frequency range: 2.4020-2.480GHz- Built-in rechargable Li-batteries:300mAh- Charger output Spec.: DC 5.0V(300mA)- Normal charging time: ≤3 hrs- Calling time: ≥10hrs- Music Time: ≥6hrs- Standby time: ≥135hrs- Unit dimension: 54x47x16 mm(Single Earplug) Packing:40pcs/CTN Carton Size: 52.5×24.5×41.5cmN.W.: 6
Specifications Bluetooth headphone Automatic switch between phone call and music Enjoy stereo music wirelessly Comfortable wearing OEM&ODM Features: Portable bluetooth stereo headphone with micCompatiable for PS3--online chattingCompatiable for iPhone-listening music and making phone calls. Automatic switch between phone call and music.Allows you answer or make calls with the bluetooth enabled mobile phone while you are listening to music. After you ended the call, the music will follow to be streamed in few seconds. Enjoy stereo music wirelessly Comfortable wearing and secure carrying The volume can be controled by buttonsThe headset location can be telescopic adj
Specifications waterproof bluetooth headphones 1.Product size: 41*18*11MM 2.Packing:53*47*35CM/100pcs 3.15kg/16kg/100pcs 4.Color box waterproof bluetooth headphonesSpecifications:1. Standards: Bluetooth specification V2.0/V2.1+EDR2. Radio Frequency Range: 2402-2480MH3. Transmission Power: Bluetooth Power class 24. Distance: 10m in open space5. Button/Switch: Multi-Function Button, Volume Up/Down6. Certification: BQB, CE, FCC, ROHS7. Packing: Neutral packing Main Function:1. Listen to music from your MP3&Cellphone&PC2. On-line chat through BT wireless transmitter3. Faster connecting, clear sound, anti-interference4. Redial the last call, Reject call. Volume adjustable5. Style clip-on stable to wear.6. Support A2DP, AVRCP, Bluetooth headset, hands free profile. Newest and elegant design OEM service availableComfortable & hot sale productsBest quality with reliable warrantyGood for promotion
Specifications 1.Communication:Wireless 2.Use:Mobile Phone 3.Function:Bluetooth,Noise Cancelling 4.Type:Bluetooth clip-on stereo headset Specifications1. CSR chip 2. connect 2 phones 1 time 3. play music 4. work for iphone, sumsung etcFashionable 2013 mini mobile phone stereo bluetooth headset for iphone Why choose us?--1. OEM orders are welcome--2. Wholesale,Retail order acceptable.--3. Mixed order/color acceptable.--4. Fast delivery time--5. Sample available.--6. Shipment by DHL,EMS,UPS,FEDEX,China/HK post airmail to all over the world--7. Drop shipping offered.--8. Payment accept T/T, Paypal, Western Union, Escrow etc. Main Specifications: Name: Multimedia bluetooth stereo headsetType: Bluetooth clip-on stereo headset 1. Travel charger: DC 5v 220mA2. USB charger USB +5V3. Battery Voltage: 3.7V high capability rechargeable lithium polymer batter4. product standard, class 2 Operation5. Talk time: 5.5 hours6. Standby tim
Specifications 1,Fashional and innovative design; 2,super-bass sound; 3,CE,ROHS certificates. Headphones Specification:1.Hi-Fi stereo headphones. 2. Good performance 3. Powerful magnet systems and lightweight diaphragm to provide high-quality sound 4. Powerful bass and increased signal levels for modern rhythm music Advantages:1,We have over 800 workers which means we could offer you much faster delivery time;
Brand Name: Honcam Model Number: HC-PS3033 Style: Headband Communication: Wireless Connectors: 3.5mm Use: Mobile Phone Function: Bluetooth Place of Origin: Guangdong China (Mainland) Bluetooth version: V 3.0+EDR Chip: CSR BC5 Receiving distance: 10 meters Sound: Stereo sound Frequency response: 20-20,000 Hz Frequency: 2402MHz-2480MHz Talk time: About 15 hours Music playing time: About 12 hours Standby time: About 300 hours Charging time: Less than 3 hours Packaging & Delivery Packaging Detail: gift box, or as per your other needs. Delivery Detail: 20-25 days after confirm the payment Specifications 1.Accept OEM 2.Bluetooth V3.0+EDR 3.Stereo music playing 4.We are factory manufacturer 5.Long battery life and fast charging Features:Bluetooth version: 3.0+EDRSupport PS3 Voice chatSupport TF card play MP3/WMASupport Bluetooth stereo music playingSupport PC connect (through data cable) listen to music and to control music played functionSupport PC Connect (through data cable) download musi
Brand Name: OEM Model Number: SKU10153 Style: Headband Communication: Wireless Connectors: USB Use: Mobile Phone Function: Bluetooth Place of Origin: Guangdong China (Mainland) model: X6 color: black + red bluetooth version: V1.2 class2 transmission range: 10m frequency rang: 2.400~2.480GHz talking time: 12 hours mp3 music format: support supportf card: up to 16GB rf output power: 4dBm bluetooth/mp3/fm playing time: 10 hours Packaging & Delivery Packaging Detail: Small box packing Delivery Detail: Within 5 days for 10pcs since payment arrived Specifications New Arrival X6 Sport MP3 Player + Bluetooth Headset w/ FM/TF Card transmission range:10m talking time:12 hours support mp3,TF New Arrival X6 Sport MP3 Player + Bluetooth Headset w/ FM/TF Card Features: - Model: X6- Color: Black + Red- Bluetooth version: V1.2 class2- Bluetooth profiles: A2DP/AVRCP/HFP- Transmission range: 10m- Frequency range: 2.400~2.480GHz- RF output power: 4dBm- Built-in 3.7V 500mAh lithium
Brand Name: Bluetooth stereo headset Model Number: BH501 Style: Headband Communication: Wireless Connectors: 3.5mm Use: Computer Function: Bluetooth,Waterproof,Noise Cancelling Place of Origin: Guangdong China (Mainland) Feature: Wireless headset Sound: Stereo earphone Usage: Mobile phone headset laptop earphone Packaging & Delivery Packaging Detail: Blister box Delivery Detail: 1-5business days after confirmed order Specifications Wireless headsets for iPhone iPad MP3 Mp3 player wireless headset wireless bluetooth headset Long life One year warranty Bluetooth stereo headsets for iPhone, iPhad, MP3, mobile phone, laptop, Wireless earphones. 2013 Hot selling! Product feature: This BH-501 bluetooth stereo headset let you enjoy excellent digital-quality music comfortablely with your computer, MP3 player, home stereo, cell phone, or any other device which supports Bluetooth stereo audio. Acoustically-turned design and high-quality drivers ensure best-in-class audio
Brand Name: Winait or OEM Model Number: BH-905I Style: Headband Communication: Wireless Connectors: USB Use: Mobile Phone Function: Bluetooth,Noise Cancelling Place of Origin: Guangdong China (Mainland) Bluetooth: V.2.1 +EDR Earphone connecting time: 2-3 hours Waiting time: 150 hours Used: IPHONE and Android phone Operating frequency range: 2.4GHz-2.480GHz Packaging & Delivery Packaging Detail: card box,OEM package Delivery Detail: 10-30 days Specifications wireless sports bluetooth headset stereo headphone 1.Bluetooth V2.1+EDR 2.Support for IPHONE and Android phone The BH-905i Bluetooth Headset features revolutionary technology that cancels out background noise and brings optimal clarity to your calls and your music. Enjoy superior audio quality with advanced digital signal processing (DSP).Product Features: Bluetooth-enabled headphones for music and mobile conversation; twin speech microphones Hear clear music and calls with multi-microphone noise cancellation for block
Specifications 1.Small cool wireless bluetooth foldable headphones 2.FM function 3.Micro SD card reader function 4.MP3 automatically play Small cool wireless foldable bluetooth headphones (GX-288) Specifications: * Ear hook and folding MP3 bluetooth headphone * Multimedia Computer Headphone * Compatible with all Bluetooth cellphones * Enjoys wireless connection via an Bluetooth * Works well with Skype, MSN, and VoIP * Crystal clear sound can thoroughly release your hands to enjoy your work * Play high quality MP3 from TF cards * Hi-fi sound & FM function * Wired & Wireless headphone * Listen to MP3 music from Nokia mobile phone * Listen to stereo music from PC * Line in & line out function * Portabl
Brand Name: Songman Model Number: BT07-BB Style: Headband Communication: Wireless Connectors: USB Use: Mobile Phone Function: Bluetooth Place of Origin: Guangdong China (Mainland) Usage: mobile phones Color: Black, white, blue, green, red, yellow Sound output: high-end profeesional Working Distance: 10 meters Input Voltage: USB 5V Battery: Li-battery Package: With high-end window box Packaging & Delivery Packaging Detail: Giftbox, window box, blister box Delivery Detail: 30 days Specifications 1 Hottest High Quality Music Stereo Bluetooth Headset 2 Elegant Fashion Design 3 High Acoustic Fidelity 4 CE/RoHS/BQB Features: 1.Easy to use,have normal stereo headphone version and bluetooth headphone version.2.Built-in 350am lithium battery, connect USB cable to charge Bluetooth headsets can work with bluetooth enabled devices such as mobile phone, Laptop, PC, & PSP , Table etc.We are professional and quality stereo headphone and bluetooth headset manufacturer, especially
Specifications 1.2013 New Model Wireless Stereo Bluetooth Headset. 2.OEM/ODM welcome. 3.Best price and timely service 2013 New Model Wireless Stereo Bluetooth Headset,OEM Button Functions: Volume +, Volume -, the power switch button Working voltage:2.4-5V
Specifications 1.Mini Bluetooth Headphone 2.Pink 3.Bluetooth V2.1 4.Talk time: 5 hours ProductMini Pink Wireless Bluetooth HeadphoneProduct Highlight1. The mini Bluetooth headphone supports Headset Profile and Handfree Profile.2. Last number redial, call rejection and adjust volume, etc.3. Through the use of Bluetooth wireless transmitter, the Bluetooth headphone makes online chat reality.4. Cell phone loss protection, call note.5. With stylish design, the mini Bluetooth headphone functions as an ornament.6. Application: The mini Bluetooth headphone, a type of wireless products, offers compatibility with all famous branded Bluetooth cell phone and is used as a handsfree. Coupled with a Bluetooth dongle, it makes online voice chat a areality.Specifications1. Bluetooth version: Bluetooth V2.1, compatible with V2.0 and V1.22. Chip: CSR BC63. Transmission distance: 10M(Class 2)4. Frequency:2.4GHz5. Stanby time: 90 hours6. Talk time: 5 hours7. Charge hour: less than 2 hours8. Power supply:
Specifications Bluetooth earphone for laptop and cell phone Feather: 1) OEM brand 2)Customerized 3)Easy-to- carry 4 )Waterproof Bluetooth headphone for laptop and cell phone Features: Multimedia Headphone for Computer, MP3/4 player. Miniature ear buds make you comfortable Suitable for children Portable frame and easy to carry Perfect voice and beautiful appearance.Specifications: Speaker: diameter 27 Mylar Impedance:32Ω at 1K Hz Sensitivity:105dB±3dB at 1KHZ Frequency response: 20-20,000HZ Rated Power:100mW Mic Dimension:φ9.7×4.5 Polar Pattern: omni-directional Sensitivity:-58±2dB Plug Type:φ3.5
Specifications 1.super stylish bluetooth headset with high quality 2:Stylish earphone housing 3:Customized color and logo print Features: 2.4GHz uncompressed sound intact 2-way transmission invisible microphone