Feature:100% brand new and high quality.Quantity: 1Can talk， listening to musicBuilt-in audio processing system， can be a very good eliminate Noise and echo， to ensure clear communication， and music.Small and light， stealth design.Spescification:Bluetooth version:V4.1Bluetooth profiles:Hands free / HeadsetRadio frequency:2.402-2.480GHzTransmission power:Class2Support A2DP:music playback (audio output: 35mW， Play / Pause)Multi-point connections can be connected to two one with two Bluetooth devices simultaneouslyTransmission range:10 mCharging Power:AC input 110-240V DC output 5V (charging time / less than 2 hours / charging voltage 3.7v)4 hours talk time (music playback three hours / standby time 120 hours / working current <15mA)Battery type:50mA rechargeable lithium batteryPackage Included:1X Earphone1X USB cable1X Manual