Place of Origin: China (Mainland) Brand Name: Trait-tech Model Number: T-BLUE-122 Usage: Laptop Output Type: DC Connection: Desktop Color: White Weight: 0.0594kg Guarantee: One year for free Packaging & Delivery Packaging Detail: Q'ty/Carton : 100 pcs Carton G.W : 6.600 kgs Carton Size : 30.0*20.0*18.0 cm Delivery Detail: 1-3 Days after payment Specifications Driver mini usb bluetooth dongle adapter Small, easy to carry No MOQ, large stock Qualified with factory prices Bluetooth 4.0 USB 2.0/3.0 driver mini usb bluetooth dongle adapter100% brand new and have good quality;Bluetooth low energy wireless USB adapter;Dual-mode bluetooth transmission;Low-power and selectable 1.2/3.6V input/output;Support bluetooth voice and data;Support muti-language;Wireless local area network share interface.SpecificationsBluetooth v4.0;Support network, dial-up, Fax, Lan access;Operating system: windows 98/2000, Vista, Windows 7;Universal serial USB interface: USB2.0/3.0;Transmission speed: 3mbps;eceiv
Place of Origin: Guangdong China (Mainland) Brand Name: Neuter Model Number: LY-18 Usage: Mobile Phone Type: Bluetooth Packaging & Delivery Packaging Detail: blister bag with color paper Paking list:46*30*37.5/350PCS/9KG/10KG Delivery Detail: about 10-15 business days after receive the deposit Specifications Bluetooth adapter 1.High quality good price 2.Fast delivery 3.Rage(distance):10M-100M 4.One year warranty time Bluetooth adapterProduct Model:LY-18Product Name:Bluetooth adaptorDescription:1.Insert and play,no need to connect the power,supporting all kinds of Bluetooth phones,strong compatibility,can transmit any file easily.2.Intuitive software operation interface,no complex settings.3.Apply to Windows 98SE/ME/2000/XP/Vistar or Mac OS x 10.26 and other operation systerm,no need to drive under Windows XP SP2,easy to take along.4.With access to internet via wireless dial (Bluetooth phone devices needed)5.Bluetooth wireless LAN,can help 8 pieces of computers build a small wireless n
Brand Name: Neutral Model Number: LY-18 Place of Origin: Guangdong China (Mainland) color: optional Item dimension: 2.2*1.8*0.7CM Packaging & Delivery Packaging Detail: plastic bag with color paper Delivery Detail: 3-5days Specifications 1, USB bluetooth adapter 2,CSR chip 3,USB 2.0/class two 4,logot printing 5,Applicable to CE,ROHS USB bluetooth adapter Specifications Standard: Bluetooth 2.0, EDR, Class IIPlatform: Windows 2000, XP, Vista, Mac OSInterfaces: USB 2.0Operating Range: 20 meters (66 feet)Frequency: 2.4GHz~2.4835GHz ISM BandTransmitter Power: +2 dBm(class II)Receiver Sensitivity: -80 dBm @0.1%BERPower consumption: 70mA(working)Data Speed: Up to 3 MbpsOperation Temperature: -10 ~ 55 degree CStorage Temperature: -20 ~ 65 degree CHumidity: 10% ~ 90% non-condensingDC Power(Supply Voltage): 5V from USB .
Specifications 4 in 1 travel adapter with dual port usb 1.Customize ,Logo printing 2.new 100% 3.CE, ROHS, UL.. 4.Competitive price 4 in 1 travel adapter with dual port usb,4 in 1 travel adapter with dual port usb manufacturers&suppliers&exporters Factory Direct Sale=Superior Quality+Best Price Description of 4 in 1 travel charger: If you are an international traveler, this universal power adapter is a MUST HAVE. PROBLEM:You travel to a different country and now you can't plug in any of your devices because the wall outlets are different shape... SOLUTION: Plug your cord into this adapter and switch to the shape you need. That odd shape port has all the appropriate holes to fit USA plugs, European plugs, Australian plugs, UK plugs. All of the wall outlet plugs are hidden within the device (makes for great portabil
Specifications 1. Bluetooth v2.1 +EDR; 2. Compatible with all devices with Bluetooth enabled; 3. Works well with Bose, JBL, and etc docks. A CLOSER LOOK: FEATURES:1. Features Bluetooth v2.1 with EDR for superior wireless performance2. Transmits up to 33 feet away3. Remembers up to six paired devices4. Compatible with all devices enabled with A2DP stereo Bluetooth 5. 1-Year Limited Warranty
Place of Origin: Taiwan Brand Name: Arsys Model Number: HL-MD08P-C1PB Bluetooth to RS-232 Serial Adapter: with Battery Pack Specifications Bluetooth Specification V2.1+EDR, Class 1, up to 500 Meters.Built-in Battery Management System (Power Input & Charge) Bluetooth Specification V2.1+EDR, Class 1Operation Range up to 500 Meters.Supports Bluetooth Serial Port Profile (SPP)Provides transparent RS232 serial cable replacement.Supports Baud Rate 1.2k to 921.6k bps. Easy to use Windows configuration tool available.Supports UART interface.Supports CTS / RTS hardware flow control.Customized features support for pairing mode, device name, PIN code….Supports Bluetooth SPP as a slave or a master.Supports Bluetooth Auto Reconnect.Built-in Battery Management System (BMS - Power Input & Charge) to work with battery pack. Description Bluetooth to RS-232 Serial Adapter w/BMS Bluetooth Profile Series Port Profile (Bluetooth SPP)Stand
Brand Name: OEM Model Number: dongle Place of Origin: Guangdong China (Mainland) color: black Products Status: Stock Type: USB Use: Computer Specifications Super mini Bluetooth adapter/dongle Description: Contents: Super mini Bluetooth adapterSpecification:1.Bluetooth 2.0 compliant2.USB 2.0 compliant3.Operation range: 20 m (Bluetooth class 1)4.Built-in antenna5.Frequency band:2.4GHZ unlicensed 1SM band6.Maximum data rate:5MB7.Sensitivity :-89dBM at 0.1%BER8.LED status indicator 9.Software support:Windows98/98SE/ME/2000/XP/VISTA Packing:Blister 500pcs/CTN G.W:11kgCTN size:50*36.5*37cmVolume weight:15kg
Specifications ac/dc power adapter travel plug adapter plug adapter 2.high conversion rate,low temperature 3.100% full load burn in test ac usb wireless adapter for android usb power adapter usb travel adapterSpecifications1.100% full load burn in test 2.high conversion rate,low temperature 3.1year warranty 4.Best sales services 5.CE ModelWIS-01WIS-02WIS-03 OutputDC output voltage5V12V24VOutput voltage tolerance±5%±5%±5%Rated output current5A5A2.5AOutput current0~5A0~5A0~2.5AOutput power25W60W60WRipple and noisemVp-p100mVp-p240mVp-pLine regulation±1%±1%±1%Load regulation±5%±5%±5%Voltage adj . rangeFixedSetup rise hold up time500ms,20ms,50ms/230VAC 500ms,20ms,15ms/115VAC at full load InputInput voltage range90~264VAC 135~370VDCAC input current0.7A/100VACEfficiency75%80%83% AC inrush current45A/230VACLeakage current0.75mA/240VACFrequency range47~63HzProtectioncharacteristicOver load pr
Specifications bluetooth adapter,usb dongle,usb data storage,mini usb bluetooth adapter,bluetooth adapter,USB bluetooth adapter,dongle bluetooth adapter,usb dongle,usb data storage,mini usb bluetooth adapter,bluetooth adapter,USB bluetooth adapter ,bluetooth dongle,USB dongle,bluetooth adaptor,car kit bluetooth,mini bluetooth dongle Product DescriptionBluetooth is an open specification for wireless data transmission which operates on the globally available 2.4GHz radio frequency. Bluetooth v1.1 available Supporting 2.4GHz ~ 2.483GHz FHSS Providing Data Access Via USB Interface 10 metre coverage WIN98SE/ME/2000/XP OS support File Transfer Support, Dial-Up and LAN Access profile Sensitivity: < -85 dBM Data transfer rate up to 1M bps Surf the internet by dial-up service through a Bluetooth mobile phone Easily create a small network with up to 8 Bluetooth products File Transfer Information Exchange Information Synchronization
Specifications mobile dual sim adapter for apple iphone bluetooth dual sim adapter 1. new design,fast delivery 2. smart mobile adpter For iPod Touch UsersJust connect your iTouch to SocBlue and your iTouch will be immediately transformed into a powerful iPhone which not only has the voice calls, short messages and Internet accesses function but also has the Dual SIM/Standby characteristics. The amount cost of one iTouch and one SocBlue will be far less than that of one iPhone while its function will be more powerful than iPhone’s. For iPhone UsersLike iPhone but it is single-card designed.What if we need to use two cards or three cards for various reasons?Carrying iPhone and another high-end phone at the same time will be too heavy and uneconomical, also an iPhone with a low-end phone will degrade our identity with less aesthetic pleasure.How eagerly we are looking forward to having a magic prop to perfectly solve this problem!Now,SocBlue is coming.
Specifications 5W adapter bluetooth for tv 1.Universal AC input / Full range 2.CCC ROHS FCC CE 3.3 year warranty 5W adapter bluetooth for tv Features : ·Universal AC input / Full range ·3 pole AC inlet IEC320-C14·Protections: Short circuit/Overload/Over voltage /Over temper·Fully enclosed plastic case ·Class I power ( with earth
Specifications 8 inch touch screen bluetooth adapter for android tablet 1,Android 4.0 2,Boxchip A13 Cortex A8 3,External 3 G port 4,Mul 8 inch superpad google tablet pc SpecificationCPUBoxchip A13 Cortex A8GPUMali 400 3D hardware accelerationOperation systemAndroid 4.0Languagesupport multiple languageRAM512MB DDR3 on boardStorage Device4GB MLCMicro-SD(UP to 32Gb)Gravity4-Directions gravity sensingLCDSize8inch,LED backlightPIXEL800*600pixels(4:3)WiFiWIFI:IEEE802.11b/g/n wireless network3GExternal 3 G portTouch PannelMulti-touch Capacitive screenI/O PortMini 5pin USB port ( OTG)*1,TF card slot*1,3.5mm stereo headset*1,DC JACK*1Function KeyPhysical buttons:Power/Vol+/Vol- touch key:Back/Home/Menu
Specifications Bluetooth USB dongle/usb dongle/bluetooth adapter/dongle/usb dongle/Bluetooth adapter Conwise Chipset,9M Operation range Bluetooth USB dongle/usb dongle/bluetooth adapter/dongle/usb dongle/Bluetooth adapter,usb adapter1. Bluetooth USB dongle2. Operation range: 9 meters3. Carrier Frequency: 2.4-2.483GHz4. Spread Spectrum: FHSS5. Data Rate: (Bluetooth v1.2) 1Mbps or (Bluetooth v2.0) up to 3Mbps 6. I/O Interface: USB v1.17. Input Power: DC 5V, USB Power8. Sensitivity: (Bluetooth v1.2) <0.1% BER at -80 dBm(Bluetooth v2.0) <-82 dBm (typical), GFSK9. LED Indicator: Single LED
Brand Name: N2Mobile Model Number: IP-001 Place of Origin: Guangdong China (Mainland) Color: Mix colour Function: Bluetooth Transformer Type: Adapter Packing: Paper box Age: Above 10 years old Material: plastic Product status: In stock Compatible platform: For Mobile,Tablet PC Lead Time: 2-3days Weight: 0.15 kg Packaging & Delivery Packaging Detail: Paper box Delivery Detail: the lead time will take around 3-15 days depend on quantities Specifications N2mobile As Gmate Bluetooth Transformer For Iphone For Ipad For Ipod touch 1.High grade material 2.Fashion 3.Low price N2mobile As Gmate Bluetooth Transformer For Iphone For Ipad For Ipod touch Products Description: Key Advantages:Enable an for iTouch with phone featuresFor iPhone or Android phones can become dual SIM phonesFor iPad or Android Pads can surf the net anywhere, anytimeN2 mobile is small and hidden away so you can use it discretelySpecification GSM Quad Band: 850/900/1800/1900 MHz1 Push-Push SIM Card
Specifications mobile dual sim adapter for apple iphone bluetooth dual sim adapter 1. new design,fast delivery 2. smart mobile adpter For iPod Touch UsersJust connect your iTouch to SocBlue and your iTouch will be immediately transformed into a powerful iPhone which not only has the voice calls, short messages and Internet accesses function but also has the Dual SIM/Standby characteristics. The amount cost of one iTouch and one SocBlue will be far less than that of one iPhone while its function will be more powerful than iPhone’s. For iPhone UsersLike iPhone but it is single-card designed.What if we need to use two cards or three cards for various reasons?Carrying iPhone and another high-end phone at the same time will be too heavy and uneconomical, also an iPhone with a low-end phone will degrade our identity with less aesthetic pleasure.How eagerly we are looking forward to having a magic prop to perfectly solve this problem!Now,SocBlue is coming.
Model Number: TP-006B Specifications Super mini USB Bluetooth Adapter, Bluetooth Dongle, TP-006B (bluetooth, blue tooth, USB bluetooth) Super mini USB Bluetooth Adapter, Bluetooth Dongle, TP-006B (bluetooth, blue tooth, USB bluetooth) New Model: TP-006B
Model Number: AWUB2427 Specifications Wi-Fi & Bluetooth wireless connection simultaneously 54Mbps Wi-Fi data-rate & 3Mbps Bluetooth data rate up to 300m range Features · Wi-Fi and Bluetooth wireless connection simultaneously · Patented technology for Bluetooth and Wi-Fi 802.11b/g coexistence · Up to 54Mbps Wi-Fi data-rate & 3Mbps Bluetooth data rate · Wi-Fi range: indoor 100M; outdoor 300M(open space) · Compatible with Bluetooth Class 1.0, Range: 100M · USB 2.0 interface and UPnP · Support 64/128-bit WEP encryption, WPA/WPA2 for Wi-Fi security · &n
Specifications 1.V3.0 Bluetooth Wireless USB Adapter 2.All Tested, Packed Carefully 3.Fast Delivery Notice:You can buy a sample conveniently on our website at low price $9.72For more information, please view this product on vococal.com :http://www.vococal.com/item?lid=22949901Accept PayPal, Free Shipping with Tracking#, Support Dropship!Offer Tracking Update Notification Service ---- Help You Track The Package!Description: NO.3610c110823010100% Brand New! Never Used Before!Brief Introduction:1.V3.0 Bluetooth Wireless USB Adapter2.All Tested, Packed Carefully3.Fast DeliveryDetails:This mini USB Bluetooth Adapter enables short-range wireless data connectivity between computers and Bluetooth enabled devices. Personal digital assistants, cellular phones, and other devices can connect wirelessly with your computer. Bluetooth devices can communicate with each other within a 20M range. Transfer faster than previous Bluetooth versions!Features:Simple pairing,good anti-jammingUnicast con
Specifications Mini bluetooth,V2.0+EDR,USB V2.0 compliant Bluetooth V2.0+EDR, USB V2.0 compliant Operation range: class II (10-20m), class I(100m) (optional) Built-in antenna Chipset: broadcom, CSR, issc (optional) Frequency band: 2.4GHZ unlicensed ISM band Maximun data rate:1MB Sensitivity: -89DBM,0.1%BER LED status indicator Supports Windows XP, 2000, ME, 98SE and Vista OS Supported languages: English, simplified Chinese, traditional Chinese, Japanese, Korean, French, Italian, German and Spanish Dimension: 70x21x12mm Standard color: blue, red, black Certifications: CE and RoHS
Specifications 2013 Best Selling Bluetooth loudSpeakers Touch ears volume control Perfect hi-fi sound quality; Five trumptes; 15W subwoofer 2013 Best Selling Bluetooth loudSpeakers Model: HFD-2106 Packaging DetailsUnits per carton: 8pcs/ctnCarton Dim. (LxWxHmm):54.5x46.5x42cmCarton N.W.: 16.5KgCarton G.W.: 18Kg portable panda speaker Product fea tures:• Panda shape designed, quite cute and fun;• 3.5mm jack audio in/out;• Audio in compatibe for iPod/mp3/mp4/notbook/pc/mobile;• With remote control function,playing music convenience and comfortable;• Playing music anywhere, anytime. Accessories:•Used manual•Docking cradles•Remote control•Audio connection cable•AC adapter This is Melody.Welcome to get more details from me.Thanks for attention.
Place of Origin: Guangdong China (Mainland) Brand Name: EDUP Model Number: EP-B3505 Packaging & Delivery Packaging Detail: in the color box Delivery Detail: in the 15-25 working days(according to your order) Specifications 1.ultra-low power consumption/dual-mode Bluetooth 2.Maximum asynchronous transfer rate of 3Mbps 3.2.4GHz-2.4835GHz ISM Band HOT SALE Mini Ultra-low power consumption/Dual-mode 4.0 Bluetooth AdapterSpecifications1.ultra-low power consumption/dual-mode Bluetooth2.Maximum asynchronous transfer rate of 3Mbps3.2.4GHz-2.4835GHz ISM Band4.Ultra portable-tiny enough to stay with your laptop5.Audio headsets and headphones6.Human interface devices such as a mouse,keyboard,or game contrller7.Mobile phone,Smartphone and PDAs8.Media players,Digital cameras,Printers,TV set-top boxes9.PC notebooks,netbooks and desktopsPictures
Specifications Wireless bluetooth music receiver 1.AC adapte 2.USB charge cable 3.Can be paired to any bluetooth enabled devices Wireless bluetooth music receiver
Products Status: Stock Brand Name: OEM Model Number: CV105 Place of Origin: Guangdong China (Mainland) Receiving / Sending rang: 0 ~ 20 m Dimensions: 22mm x 18mm x 7mm Antenna: Integrated Frequency: 2.4~2.48 GHz Packaging & Delivery Packaging Detail: Carton packaging Delivery Detail: 3-7days Specifications 1.Standard: Bluetooth V2.0 2.Frequency: 2.4~2.48 GHz 3.Symbol rate: 3Mbps 4.Antenna: Integrated USB 2.0 Bluetooth Dongle Adapter EDR Wireless Tiny Features:1.The Bluetooth USB Dongle allows a computer with a USB port to communicate with others Bluetooth-enabled devices wirelessly2.Bluetooth V2.0 + EDR compliant, backward compatible with v1.2 and 1.13.USB interface fits both Desktop PCs and Notebooks4.Internet Access sharing5.Enables communication with Bluetooth Mobile Phones6.Bluetooth Profiles Supported: A2DP, Generic Access, Service Discovery Application, Serial Port, Dial-Up Network, Fax, File Transfer, LAN Access, Synchronization, Object Push, Generic Object Exchange
Products Status: Stock,Used Brand Name: JINGCAI Model Number: YC-4114 Place of Origin: Guangdong China (Mainland) Rubberized: blue/red Packaging & Delivery Packaging Detail: blister or gift box packing Delivery Detail: 10 days Specifications USB Bluetooth Adapter USB2.0 Hi Speed No external power required Direct plug&play, driverless Support USB 2.0/1.1 USB Bluetooth Adapter Bluetooth USB Dongle is a quick and inexpensive solution as a bluetooth plug-on modules to computers. It enables computers to communicate with any bluetooth peripherals(such as computers, PDAS,mobile phones,printers)wirelessly. Specification:
Brand Name: OEM Model Number: BLUE-102 Place of Origin: Guangdong China (Mainland) Colour: black,blue Type of Packing: Blister Packing Package Includes: Installation CD Packaging & Delivery Packaging Detail: Blister Packing Q'ty/Carton : 250.00 pcs Carton G.W : 12.00kgs Carton Size: 60.00*32.00*38.00 cm Delivery Detail: 3-5days Specifications Bluetooth USB2.0 Adapter according to bluetooth V1.2/V2.0 standardopration frequency in 2.4GHZ to 2.483GHZ ,adopt FHSS technology opration range approximately 25M /100MSupport Windows 98SE/ME/2000/XP or Mac OS X 10.2.6 above opration system sensitive: < -85 dBM date transfer rate: 1M bps Transfer pictures from your camera phone to the PC ,use your mobile phone to transport data from PC to PC,Synchronize your cell phone&PDA with your PC wirelessly ,this dongle can communicate with all device with bluetooth QualityAll of the products are brand new, top quality electronics We offer you a wide-selection of consumer electronic product
Type: Tablet PC Products Status: Stock Screen Size: 7" Processor Manufacture: Rockchip Processor Type: RK3066 Dual Core Cortex A9 Processor Main Frequency: 1.5GHz Hard Drive Capacity: 16GB Memory Capacity: 1GB Touch Screen Type: Capacitive Screen Display resolution: 1024x600 Battery Life: 6-10 hours Feature: Bluetooth,Wifi,GPS,Webcams,Multi Touch,HDMI,G Sensor,Camera Operating System: Android 4.1 Weight: 300g Place of Origin: Guangdong China (Mainland) Model Number: H76 Color: black, white, red, blue, green, etc CPU: PK 3066 dual core Cortrex-A9 1.5Ghz Resolution: 7inch 1024x600 Touch panel: Capacitive panel multi-touch 5 points Wifi: 802.11b/g/n support 3g external dongle: yes OS: Android 4.1 HDMI port: Micro USB Camera: front 0.3,rear 2.0 Unit size: 195*110*10 mm Packaging & Delivery Packaging Detail: Color giftbox Delivery Detail: 15 to 35 working days Specifications USB bluetooth adapter for android tablet pc 1.CPU:Dual Core Cortex A9 2.Nand flash:16GB 4. Certificate:ROHS and
Type: Code Reader Voltage: Standard Power: Standard Certification: CE,FCC Applicable Models: For all obd ii car Place of Origin: Guangdong China (Mainland) Brand Name: ELM327 Model Number: ELM327 bluetooth Gross weight: 0.5 KGS Net weight: 0.3 KGS Delivery time: 1 day Delivery method: by DHL, UPS, TNT, EMS, Hoko Port With bluetooth: Yes Warranty time: 1 year Mini quantity of order: 1 unit Packaging & Delivery Packaging Detail: Giftbox with full package Delivery Detail: Send out within 1 day after we received your payment Specifications Super elm327 bluetooth adapter is the newly developed wireless scan tool, wholesale price with fast ship Super elm327 bluetooth adapter Featuresbluetooth ELM327 is the newly developed wireless scan tool. It supports all OBD-II protocolsWorks with all OBD-II compliant vehicles Wireless (Bluetooth) Software included for Palm, PDA Software included for Windows PC Software included for Windows Smartphone Supports ISO 9141, KWP2000 Supports SAE J1850 Su
Products Status: Stock Brand Name: YAHEE Model Number: YHA-BT005 Place of Origin: Guangdong China (Mainland) Color: Black Packaging & Delivery Packaging Detail: Available to delivery without package which is space-saving and money-saving. Delivery Detail: 250000 pcs within 7 working days after your payment Specifications Bluetooth Adapter Dongle Antenna Yahee's USB Wireless Class1 Bluetooth Adapter Dongle Antenna,YHA-BT005 Trade Manager: cnyaixun Specification Work with all Bluetooth Enabled devices Bluetooth V2.0 Compliant USB UHCI/OHCI spec 2.0 compliant Operation range: 0-100M Frequency band: 2.4GHZ unlicensed ISM band Maximum data rate: IMB Expanded signal via external antennaSoftware Support: Windows 98/98SE/ME; Windows 2000; Windows XP; Windows Vista.PaymentWe accept West Union, and TT.Payment must be completed within 3 days after you place an order.If you can't checkout immediately after auction close, please wait for a few minutes and retry.
Type: Code Reader,car code scanner Voltage: 24v Power: 12w Certification: ce Applicable Models: all obd2 cars Place of Origin: Guangdong China (Mainland) Brand Name: xtool Model Number: iobd2 cars: all obd2 compliant cars software: free update forever warranty: one year weight: 0.5kg Packaging & Delivery Packaging Detail: carton Delivery Detail: two business days Specifications Apple MFi licensed bluetooth module support both iOS and Android devices software update free one year warranty What is iOBD2 MFi BT?iOBD2 MFi BT is a wireless diagnostics system for car engine. It combines of an MFi Bluetooth OBD II adaptor that communicates with iOS and Android devices by Bluetooth and a slick app for iOS and Android systems. It makes your smartphone or tablet into a slick display to monitor the health of your car engine. How can iOBD2 help you? Ensure the health of your car engineiOBD2 talks to your car through the OBD2 port which normally locates under the steering wheel. W
Brand Name: prosng Model Number: PS-BT100 Style: Headband Communication: Wireless Connectors: USB Use: Mobile Phone Function: Bluetooth,Noise Cancelling,Microphone Place of Origin: Guangdong China (Mainland) Speaker diameter: 40mm impedance: 32Ohms color: multiple choices package: blister card packing Packaging & Delivery Packaging Detail: Blister card packaging or as client's request Delivery Detail: 15-30days after receive client's deposit Specifications 1.high quality 2.one stop service 3.good after-sale service Brief Introduction:Speaker diameter: φ40 milimeters Impedance: 32 OhmsSensitivity: 108dB S.P.L.at 1KHz;Rated power:20mWAggregate capability:50mWFrequency Response:20Hz-20,000HzMicrophone Unit:φ6*5mmImpedance:≤2.2KOhmsFrequancy Response:30Hz-16,000HzOperating voltage:3.0V Specifications: 1)Support systems:audio equipments with bluetooth functions,such as PC,cellphone,MP3… ;