Features software & CVC echo/noise cancellation for reducing noise 
Sport Back-hang style fashion design provides maximum portability
Wirelessly enjoy stereo music from all A2DP-enabled devices, such as mobile phones, PDA, PC etc
Switch automatically from remote controls on the headset allow you to play, skip and select your music tracks 
Great sound quality 

1) Bluetooth standard: v2.1+EDR class 2
2) Supports Bluetooth headset, hands-free profile, A2DP, AVRCP profiles

3) RF frequency range: 2.402-2.4835GHz ISM band
4) Radio performance: receive sensitivity of -90dBm, TX power Max 5dBm
5) Frequency response: 20Hz 18KHz, very high signal to ratio(SNR):95 Db, total harmonic distortion(THD):0.1%
6) 5 Button design: MFB, VOL+, VOL-, FWD, REV
7) Built-in Rechargeable Li-Polymer battery
8) Mini 5 pin USB plug charging port
9) Charger adapter output: DC5V

10) Nominal charging time: Max 4 hours
11) Talk time: up to 15 hours

12) Music time: Up to 14 hours
13) Standby time: up to 380 hours

14) Accessories: user manual, USB cable charger