Foldable Wireless Stereo Bluetooth V4.0 Headset Headphone For iPhone Samsung LG Description:This bluetooth stereo headset lets you listen to the music or phone calls wirelessly. Bluetooth V4.0， more stable and more compatible， allows you to enjoy a more authentic sound. Features:CSR bluetooth 4.0 solution，HSP，HFP，A2DP，AVRCPSpace-saving foldable headbandBuilt-in microphoneNoise cancellation technology， Talking with cell phone clearly3.5mm audio jack， provides a simple wired connection of a variety of devices.Built-in rechargeable lithium-polymer batterySupports wireless in-game chatting and music streamingCompatible with any Bluetooth enabled devices， such as iPhone，iPad，Macbook，Tablets， Samsung， HTC，LG，PC，etc Specifications:Color: White， Red， BlackEasily charged via USB portFrequency response: 20-20，000HzPLAY\/TALK Time: 8 HoursCharging time: 2-3 hoursTransfer Distance: 33 FT\/10 metersFrequency: 2.4GHzTechnology: Bluetooth V4.0Speaker Impedance: 32ohmWorking Range: 33FT\/10MOperating Voltage:4.2VRated Power:20mWLanguage Support: Chinese，English，Spanish，French，German Pairing:1.Long press the play\/pause button for about 4 seconds until the indicator shows blue-red light.2.Turn on the Bluetooth function of ur cellphone and search， then select the device named !#!amp!*!quot;BT-513!#!amp!*!quot;3.Normally it will not need pairing pass word， but if it is needed， pairing pass word is 0000 Package include:1 x Bluetooth headphone1 x USB Charging cable1 x 3.5mm Audio Cable1 x User Manual More detail: