Specifications adapter for android tablet 1.EU Standard USB 2.0 Charger Adapter for iPhone 4 2.USB 2.0 interface 3.For iPhone 4 4.CE FCC Factory Good quality EU Standard plug 5V 1A universal adapter for android tablet Features universal travel adapter : 1. EU plug USB home charger adapter2. AC Plug charges your devices at work or when going travel. 3. Simply carry an extra handy and light travel charger and you can charge yours anytime and anywhere. 4. Simply plug the AC Plug into any EU style 2-pins wall outlet. 5. This home charger adapter compatible for Apple iPhone iPod MP3 MP4 and other mobilephones. 6. Best replacement White Travel Plug for the original Home/Travel Charger. 7. Input Voltage: AC 100-240V 50Hz/60Hz 8. Output: DC 5.0V-1000mA iphone 5 universal travel adapter adapter for android tablet &
Specifications (723Kbps, Bluetooth 1.2, USB 1.1), Black, Retail Manufacturer: CANYON Bluetooth is a wireless connection technology between 2 or more devices. Canyon has developed 2 Bluetooth USB adapters to create a wireless connectivity environment within a range up to 100 meters.BenefitsBluetooth technology to connect mobile phones, PDAs, keyboards, mice and other compatible devicesRuns with USB 2.0 and even USB 1.1 computers having Windows 98 and more recent operating systemsFull-featured industry-standard BlueSoleil software stack by IVTBluetooth Class 2, v.1.2 device (10 meters, up to 723 kbps)Slim rubber coated design with blue LED status indicator
Specifications 1.Bluetooth V2.0/V1.2 compliant. 2.Systems supported: Windows 98SE/2000/ME, Windows XP, Windows Vista, Win7. Description:Features:Brand new and high quality.It enables computers to communicate with any Bluetooth peripherals (such as computers, PDAs, mobile phones, printers) wirelessly.Bluetooth V2.0/V1.2 compliant.Interface: USB comliance.Operation range: 0-100m.Build-in antenna.Symbol Rate: 3Mbps.Systems supported: Windows 98SE/2000/ME, Windows XP, Windows Vista, Win7.Size: 5.1cm x 2.6cm x 0.9cm - 2inch x 1.02inch x 0.35inch. Package Included:1 x USB Bluetooth Adapter
Brand Name: teoti Model Number: BT-1 Place of Origin: Guangdong China (Mainland) Supported Profiles: A2DP V1.2, AVRCP Battery: Built-in Rechargeable Lithium battery Working Range: 10 m Charging Interface: Charging Interface Input Voltage: DC5V Indicator: LED Blue Charge Time: 2 hours Net Weight: 20g Dimensions: 60mm*35mm*15mm color: black and white Packaging & Delivery Packaging Detail: blister covered with PE bag,and color box packaging Delivery Detail: 20 Specifications usb bluetooth dongle Mic for talking,connect cell phone 3.5mm line-in for earphone BQB Cert,ROHS Brief Introduction: 1,The BT Music Receiver simply connects to the Line-In or Aux port on your home speaker system.You can then stream audio from your Bluetooth enabled cell phone or MP3 player to your speaker system.Enjoy the convenience of having your music source in the palm of your hand and listening to it through your home stereo. 2,Whe
Specifications nice Wireless Micro USB Bluetooth Adapter 1.competitive price 2.fast delievry description
Place of Origin: Gyeonggi-do South Korea Brand Name: Firmtech Model Number: FB100AS Specification: V2.0 + EDR Profile: SPP,GAP Piconets(point to multi point): configurable up to 1:7 Power Class: Class1 (100m) Size: 66 x 33mm Supply Voltage: 4~12V ( 5V recommend ) Data Rate ( RS232 Level ): 2,400 ~ 230,400 bps Operation Temperature: -30°C ~ 80°C Antenna Type: Dipole Antenna ( 4dBi ) Certification: CE,FCC,TELEC,KCC,SIG(Bluetooth) Specifications - bluetooth specification 2.0 + EDR - supports picomets(1:7), SPP profile, Class1, windows GUI - controlled by AT command Products OverviewFB100AS and FB200AS are Bluetooth 2.0 + EDR based Class 1 products that support the Bluetooth GAP and SPP profiles. They are capable of a maximum of 1 to 7 communications simultaneously and support Piconets. They generally use a dipole antenna, and their normal communicating distance is100 m, which can be increased
Specifications 1,Bluetooth Connection 2,Compatible with All moblie device 3,30pin Female Plug 4,10m remote bluetooth control 1,Bluetooth Connection 2,Compatible with All moblie device 3,30pin Female Plug 4,10m remote bluetooth control
Place of Origin: Guangdong China (Mainland) Brand Name: longood Model Number: BTD-004 Packaging & Delivery Packaging Detail: blister card packing Delivery Detail: 2days Specifications Bluetooth Adapter The bluetooth adapter with nice chip and excellent quality Colour: black,transparent white,blue,red,green,y DESCRIPTIONGeneral RadioBluetooth Class 2, 20 meters (in open space) Carrier Frequency : 2.4 ~ 2.483GHzData Rate : 1 Mbps (The maximum operating range depends on the environmental factors.) Bluetooth StandardBluetooth v 1.2 & 1.1Spread SpectrumFHSS (Frequency Hopping Spread Spectrum) Modulation MethodGFSK (Gaussian Frequency Shift Keying)I/O Interface USB v1.1 Input PowerDC 5V, USB Power Sensitivity< 0.1% BER at -80 dBmRF Output Power0 dBm (typical) System SupportWindows XP/2000/ME/98SE(The product is driven by the bundled IVT BlueSoleil Bluetooth software or Windows XP SP2 Bluetooth stack)Dimensions59.0 * 24.0 * 14.0 mmLED IndicatorSingle LEDAdvantage
Place of Origin: Guangdong China (Mainland) Brand Name: WeiHui Model Number: 0 Usage: Mobile Phone Color: black Packaging & Delivery Packaging Detail: Industrial or customer designed package. Delivery Detail: 1 to 7 days after placing order Specifications 1.usb bluetooth adapter/bluetooth adaptor 2.V2.0 3.USB 2.0 4.Super mini 5.3 times faster usb bluetooth adapter/bluetooth adaptor is an amazingly compact Nano USB Bluetooth Dongle. It is a finger-nail sized Bluetooth Adapter that plugs into any laptop or tablet USB port.Features:1. Bluetooth 2.0 compliant. 2. USB 2.0 compliant.3. Plug-n-Play.4. Supports Bluetooth voice (A2DP) / data. 5. Enables wireless Personal Area Network (PAN). 6. Connecting to your Cell phone, PDAs or PC for data transfer, networking or even dial up, fax.7. Compatible with Windows XP and Vista.
Brand Name: OEM Model Number: BT00261 Type: Active Use: Home Theatre,Portable Audio Player,Mobile Phone Channels: 4 Special Feature: Wireless,Portable,Mini Place of Origin: Guangdong China (Mainland) Power from: speaker directly Mini size only: 45x28x8.8mm LED indicator: Red+blue color work current: 15mA Specifications *CSR bluetooth high speed V4.0 chip, class II, distance up to 10 meters *Support Bluetooth aptX, A2DP, AVRCP profiles *Bluetooth stereo receiver device allowing any Bluetooth mobile phone or other device with A2DP compatibility to stream audio wirelessly to other products intended for use with an Apple iPod/iPhone, such as iPod docking accessories (speakers,HiFi stations) and car's dock connector that links the iPod to the audio system *Bluetooth A2DP profile streams audio in crystal clear, digital quality to the receiving unit like a car stereo or a sound dock*CSR bluetooth high speed V4.0 chip, class II, distance up to 10 meters *Support Bluetooth aptX, A2DP, AVRC
Specifications New NFC Bluetooth adapter Bluetooth Music Receiver,Bluetooth 3.0 (Optional version: BT 4.0/NFC), NFC function,hands free(MIC) New NFC Bluetooth adapter | bluetooth adapter for android tablet | usb bluetooth adapter Bluetooth Music Receiver New Design, Private Mould1.Bluetooth 3.0 (Optional version: BT 4.0/NFC)2.Support profiles: A2DP V1.23.Powered by 5V DC4. Transmission distance: no less than 10 meters5. Dimension:D21mm * H15mm6. 1 indicators flicker quickly when there is no connection. Blue light flicker slowly after successful connection 7. 3 functional keys: 1 for MIC 1 is 3.5 mm audio output 1 for mini USB interface8. Built-in rechargeable lithium battery (250 mAh)9.Optional: NFC, Power adapter Product features:classic design, perfect shape.Simple to use, suitable for vehicle system.Transmission distance: more than 20 meters in open space without hindrance.Ultra-Clear and expedite Voice Chat.op
Specifications Driveless Micro Bluetooth USB Dongle (Adapter) With CSR Chip,Plug & Play Convert non Bluetooth PC into Bluetooth enabled. 2)Wireless connects to Bluetooth devices such as mobile phones, PDA or PC, for data transfer, networking, and dial-up, fax. 3)Enabled wireless connection to Bluetooth headset. 4)Supporting Bluetooth voice data 5)Supporting Multi languages 6)Supporting profiles: networking, Dial-up, Fax, LAN access, and Headset. 7)Operation system: Windows 98, 98se, me, 2000, XP, Vista 8)Interface: USB compliance. 9)Symbol rate: 3 Mbps 10)Receiving/Sending range: 0-100m 11) Compatible with Windows 9X /ME /NT /2000 /XP /Vista /Windows 7OEM are Welcome! we can print customer's artwork and logo
Specifications usb bluetooth adapter for android tablet lan cable 1.free OEM design 2.Competitive Price 3.Prompt Delivery laptop usb bluetooth adapter for android tablet lan cable Detailed Product DescriptionCAT 5e/cat 6 cable is one of the data cable, their description as below: 1) Item:CAT5e 4Px24AWG UTP (Standard)4Px0.51mm BC Conductor+0.91mm PE Insulation+rip cord+5.1mm PVC Jacket
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 USB 2.0 EDR 2.4G Mini Bluetooth Wireless Dongle Adapter for PC Laptop 100m USB2.0 EDR 2.4G Mini Bluetooth Wireless Dongle Adapter for PC Laptop 100m Description: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.Connect to the InternetSend and received emailEncryption and authentication ensure safe, secure communicationsBrowes the webEach dongle has a unique address (identity), allowing multiple dongle to be used in the same areaHook up to An office network ( with bluetooth access point)SpecificationOperation system: Windows98, 98SE, Me, 2000, XP, VistaStandard: Bluetooth V1.2/V2.0Receiving / Sending rang: 0 ~ 100 mDimensions: 52mm x 20mm x 5mmMaximum date rate:5 MbpsFrequency band: 2.4 GHz unlicensed ISM bandSensitivity: -89dBM 0.1%25BERLED status indicatorColour:Black and BlueThis one
Specifications 1.Support plug&play 2.100% brand new 3.Fine quality with competitive price 4.Excellent after sale service&guarantee OUR PRODUCT Features of the productsSpecial note: driven approach: unworthy drive disk drive free system drive only transmit data, does not support the audio and other Bluetooth devices, if you need to access other Bluetooth devices, online to contact us, we will be sent to the online web you! Microsoft System Bluetooth driver is no virtual sound card pass driving confined XP system Oh.Note: because the chip upgrade, Windows 7 32-bit system can support.Windows7 32-bit systems use prerequisite: inside the computer itself comes with a Bluetooth adapter, Bluetooth properties inside the computer hardware management must first Bluetooth adapter Close points disabled. Because the computer does not need two Bluetooth adapters exist, otherwise the two together conflicts system is not compatible.Then plugged directly into the computer's USB interface, o
Brand Name: 3well Model Number: uba-m01 Place of Origin: Guangdong China (Mainland) Color: BLACK/blue Symbal rate: 3MBPS Operation system: Windows xp ,Vista interface type: USB Supporting profles: net working, dial-up,fax,LAN access and hand set Carton: 62*39*24cm package: blister card packing Packaging & Delivery Packaging Detail: blister card packing Delivery Detail: 3working Day Specifications low price mini USB bluetooth adapter high quality CE&RoHs low price mini USB bluetooth adapter Electric Specification : *Bluetooth specification V2.0 compliant*Supporting profles: net working, dial-up,fax,LAN access and hand set*Operation system: Windows xp ,V
Place of Origin: Guangdong China (Mainland) Brand Name: for iphone ipad Model Number: ZTmini-8-006 Bluetooth:: 3.0+EDR compliant Audio DAC:: 94dD SNR Li-ion battery :: 250mAh profile support:: HSP, HFP, A2DP, AVRCP Warranty:: 6 months Packaging & Delivery Packaging Detail: box package or customer request Delivery Detail: within 3-5 working days Specifications Bluetooth 3.0+EDR compliant Typical + 2dBm Class 2 output power Audio DAC: 94dD SNR Build in Max. 250mAh Li-ion battery Audio Bluetooth Adapter for iphone ipad Parameters Bluetooth 3.0+EDR compliant Typical + 2dBm Class 2 output power Audio DAC: 94dD SNR Build in Max. 250mAh Li-ion battery charging circuit HSP, HFP, A2DP, AVRCP profile support SBC decode for Bluetooth audio streaming Voice prompt Build in line in interface NFC support EQ control Don’t support USB digit output mode product. Pictures: Break model restriction,Your
Specifications 1)7.85 '' inch IPS screen 1024*768 2)Android 4.1.3 OS 3)1G Ram,4G ROM 4)ATM7029 quad core CPU 5)7.6mm thickness ZX-MD8007 cheapest! 7.85 inch usb bluetooth adapter for android 1080p full hd tablet provide touch screen replacement 1)7.85 '' inch IPS screen 1024*7682)Android 4.1.3 OS3)1G Ram,4G ROM4)ATM7029 quad core CPU5)7.6mm thickness specification remarksize length*width*HighOS,CPU,Memory OSGoogle Android 4.1.3 Jerry Bean+Linux3.4 Language SupportSupport multi-language CPUATM7029 Quad-Core,ARM Cortex A9 family CPU 1.0GHz(up to 1.3GHz) HDD-DDR31G DDR3 /2GB DDR3(optional) RAM8GB(Standard)/ 32GB Display7.85 inch,AUO Ipad Mini IPS display screen Screen resolution1024*768 BluetoothB
Place of Origin: Guangdong China (Mainland) Brand Name: MJ Model Number: BTD-011 Usage: Mobile Phone Type: Bluetooth Packaging & Delivery Packaging Detail: blister+color card Delivery Detail: 5-8 days Specifications Bluetooth Dongle for BTD-011 1.Small and light bluetooth headset 2.Automatic cennecting function 3.Works stereo Product Name: Bluetooth Dongle for BTD-011 Details:*Bluetooth headset with digital recording*Records incoming and outgoing calls*Record voice memos*Extremely clear voice*Supported profiles : Headset, Hands-free*Recording audio indication*Memory full audio indication*Works stereo, excellent for listen music for your cell phone*Perfect for truckers, restaurants, and on-the-go business functionsOthers :We can offer you different kinds of other mobile phone spare parts,Mobile phoneLCD,Mobile phone touch screen,Mobile phone Housing,Mobile Phone Flex Cable,MobilePhone kepad,Mobile phone Buzzer,Mobile Phone Speaker,Mobile Phone Microphone,MobilePhone Charger,Mobile
Specifications 1.USB2.0 Bluetooth Adapter 2.10m working distance 3.2.4~2.4835GHz frequency 4.Full USB 2.0 port 5.Manufacturer USB2.0 Bluetooth AdapterProduct DescriptionThis kind of Bluetooth USB Adapter, widely used in desktop PCs, and Laptop notebooks, can be made to share files and documents conviniently, and you can play multi-player PC games wirelessly by using it, in additiion, you also can use it to wireless printing documents and netmeeting in the office.FeaturesHand-free installation, plug and play Used for desktop PCs, and Laptop notebooks Easy to expand the network Works with microphone speakers on PC Plays multi-player PC games wirelessly Wireless printing documents or net meeting Faxes via remote Bluetooth cell phone, modem or PC Exchanges or synchronizes personal information Shares file and information effortlessly, browses, opens, and copies Accesses internet via GPRS, CDMA cell phone or ADSL access point SpecificationsBroadcom V2.0+EDR specï&frac1
Specifications bluetooth usb adapter Bluetooth product,bluetooth dongle,bluetooth usb adapter,Bluetooth USB Dongle OEM facotry bluetooth usb adapterDescriptionBluetooth USB Dongle is a quickand 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. Specifications1.Bluetooth V2.0 compliant2.USB V2.0 compliant3.Operation range:(Bluetooth class 2)4.Operation range:0-100m(Bluetooth class 1)5.Built-in antenna6.Frequency band:2.4Ghz unlicensed ISM band7.Maximum data rate:3MB8.Sensitivity:-89dBM.0.1%BER9.LED status indicator Software supportWindows 98/98SE/MEWindows 2000Windows XPWindows Vista
Place of Origin: Guangdong China (Mainland) Brand Name: MVFAR Model Number: 930 Color: Black Packaging & Delivery Packaging Detail: standard packing Delivery Detail: depends on the quantity Specifications 1.Usb Bluetooth Dongle V2.0 2.Bluetooth Class 2, 10 meters 3.Carrier Frequency : 2.4026GHz-2.480GHz Specifications * Correspond with V2.0+EDR * Headset profile, Handsfree profile and Advanced Audio Distribution Profile (A2DP) * Frequency range: 2.4026GHz-2.480GHz &nbs
Place of Origin: Guangdong China (Mainland) Brand Name: greattop Model Number: GT-BTD-19R Packaging & Delivery Packaging Detail: Blister Delivery Detail: 5 days Specifications X-small bluetooth dongle bluetooth adapter CE & RoHS approved chipset: CSR X-small bluetooth dongle bluetooth adapterCE & RoHS approvedchipset: CSR Features:Bluetooth V2.0 + EDR (Enhanced Data Rate) Up to 3 times faster file transfer rate. Class II standard that supports an operating range of 20 meters Supports the newest Vista OS and Mac OS X Unlimited wireless applications (including multimedia applications). It can supports maximum 7 Bluetooth devices at the same time. Improves usability through smoother multi-device scenarios Support A2DP Hi-Fi headset Portable, lightweight and mini sized Full speed USB v2.0 interface Rosh leadless material qualified Friendly to operate user’s interface and an easy “plug-in” installation Stable, accurate and sensible search of devices in range.
Specifications Aluminum alloy bluetooth keyboard for iPad2&3 bluetooth adapter Built-in shortcut keys of IOS system Light weight Bluetooth Keyboard specification:1) Bluetooth 3.0 interface standard2) Keyboard size: 246*190*8.5mm3) Operating distance to 10 meters4) Standby time: around 90 days5) Li-polymer Battery life: around 3 years6) Key life: around 5 million strokes7) Work with both iPad 2 and the new iPad8) 78 keys Bluetooth Keyboard Feature:1) Super thin and slim design for iPad2) Big keys for better typing and operating3) Adjustable iPad display stand for better viewing4) Control iPad easily from this keyboard5) Automatically wake up and sleep your iPad6) One key to sleep iPad from this keyboard7) Bluetooth wireless technique connecting to iPad8) Can be used both as a keyboar
Specifications 1.Bluetooth V4.0 class2 (also compliant Bluetooth 2.1+EDR) 2.OS supported :windows 7, vista ,xp 3.Dual-mode Bluetooth fully qualified Bluetooth V4.0 specification USB Dongle, support Dual-mode Bluetooth/Bluetooth low energy.The product supports Bluetooth® Enhanced Data Rate (EDR) and delivers up to 3 Mbps data rate for distances to 10M. KeFeatures:Bluetooth V4.0 class2 (also compliant Bluetooth 2.1+EDR)OS supported :windows 7, vista ,xpPlug and playDual-mode Bluetooth low energy radio USB dongleFull speed USB 2.0 interfaceBluetooth end product Bluetooth low energy Support Heart rate belt, Find me, Proximity, Generic Attribute Profile Bluetooth 2.1+EDR Support A2DP, AVRCP, DUN-GW, HSP, HFP A2DP AVTCP, FTP, OPP, Audio-GW, FAX, BPP and tec.RoHS compliant BQB, CE, CE and FCC Applications:PC notebooks, netbooks and desktops USB DongleTV set-top boxes General Specification:
Place of Origin: Guangdong China (Mainland) Bluetooth USB Adapter: mini bluetooth Packaging & Delivery Packaging Detail: vacuum thermoform packing Delivery Detail: deliverred in 5 days after receipt all payment Specifications BT-D820 20M/1OOM distance adaption V1.2 be anti-jamming; V2.0 have quicker speed and support WIFI. . BT-D8201. 20M/1OOM distance adaption2. V1.2 be anti-jamming; V2.0 have quicker speed and support WIFI.3. Use bluetooth headset to listen to the music or chat on MSN/QQ/SKYPE.4. Edit tel number and documents on your mobile easily on PC.5. Support your PC or Notebook use CDMA1X/GPRS/3G WLAN.6. Chinese processing interface.7. Necklace available.8. &n
Place of Origin: Guangdong China (Mainland) Brand Name: mobile phone Model Number: accessories market target: world Packaging & Delivery Packaging Detail: box Delivery Detail: 3-7days Specifications Super mini Bluetooth adapter Super mini Bluetooth adapter DOSSAV was established in 2003,it is one of leading Manufacturers & Exporters of mobile phone accessories, digital accessories, PC accessories and peripherals products in Mainland China, after the past year’s striving, we have got very good reputation and established very solid business relationship with our clients because of our high standard ,good quality products. We always insist on that “base on quality, regard customer’s profit as our first tenet”. Our market share covers from USA, Europe, Middle East, and Africa South America to South Asia .Through many year’s development, DOSSAV has formed a comp
Specifications Newest Bluetooth Adapter Newest Bluetooth Adapter Product Description:General RadioBluetooth Class 2, 20 meters (in open space) Carrier Frequency : 2.4 ~ 2.483GHzData Rate : 1 Mbps (The maximum operating range depends on the environmental factors.) Bluetooth StandardBluetooth v 1.2 & 1.1 Spread SpectrumFHSS (Frequency Hopping Spread Spectrum) Modulation MethodGFSK (Gaussian Frequency Shift Keying) I/O Interface USB v1.1 Input PowerDC 5V, USB Power Sensitivity< 0.1% BER at -80 dBm RF Output Power0 dBm (typical) System SupportWindows XP/2000/ME/98SE(The product is driven by the bundled IVT BlueSoleil Bluetooth software or Windows XP SP2 Bluetooth stack) Dimensions59.0 * 24.0 * 14.0 mm LED IndicatorSingle LED Advantage FunctionsSerial Port ProfileDial Up Networking ProfileFile Transfer ProfileHuman Interface Device ProfileHardcopy Cable Replacement
Specifications Wireless Bluetooth Adapter for Docking Speakers Works with the docking speaker which has 30pins Wireless Bluetooth Adapter for Docking Speakers Upgrade your 30pins Docking Speaker become wireless bluetooth speaker instantly! Docking bluetooth Audio Receiverif you need pass apple certificate for the port , the price should increase US$1.00Can turn your docking speaker become wireless bluetooth speakers1 interface:Interface: Iphone 30pin interface.2 Dimensions + basic parametersLength: 48.6 mm * Width: 32.0mm * high: 9.5mm2.1 Material: ABS plastic2.2 Color: custom2.3 Weight: 12gElectrical specifications:3.1 Compatibility:The conform Bluetooth3.0 ClassII support for A2DP V1.2, AVRCP V1.4protocol3.2 Transmission distance: 10 meters (transmission distance is different due to different environmental factors and cell phone Bluetooth devices)3.3 channels: two-channel (stereo)3.4 signal-to-noise ratio S / N: more than 80