Condition: 100% brand new Item Type: Headphone Material: ABS shell Optional Color: Black, white, red, blue, green The Bluetooth device to be connected supports A2DP, AVRC Communication System: Bluetooth Bluetooth Version: V4.2 Maximum Communication Range: Approx. 10m (32.8ft) Compatible Bluetooth Protocol: A2DP, VRCP Multiple Decoding: MP3 / WMA / WAV Decoding Range: MP3: 8-320Kbps WMA: 5-320Kbps WAV: 16-1536Kbps Speaker Diameter: 40mm/1.57in Speaker Impedance: 320hm Speaker Sensitivity: 108db +/- 3db Frequency Response Range: 20-20000Hz Battery: Built-in lithium battery 200 mAh 1、Enjoys music wirelessly from Bluetooth stereo?enabled music players and mobile phones. 2、Enjoyment of basic remote control operation(play, stop, etc.) of music player functions via Bluetooth connection. 3、Bluetooth version 4.2 for higher quality audio with less interference and lower power consumption. 4、Plays Mp3 format music stored in your mini memory card, and music with other devices by accessory connector. Also enjoys FM broadcasting program including part of campus broadcasting programs. 5、The Bluetooth device to be connected supports A2DP, AVRC, with maximum practicality. 1 x Headphone 1 x Manual 1 x Data Line