Item Specification :
Charging voltage : USB 5V
Working current : 25-35mA
Bluetooth Working range : 10m
Output power : 35mW
Frequency response : 20Hz-20KHz
Charging Time : 1-2h
Listen to Music : up to 10 hours
Operation Range : up to 10 Meters
Standby Time : up to 150 hours
Headset Profile : Hands-free Profile and Advanced Audio Distribution Profile (A2DP)

Features :
Media buttons
Adjustable head band . Superb style and sound assured.
Foldable design provides maximum portability.
Enjoy music wirelessly from Bluetooth-enabled computers , PDA , MP3/CDplayers and more.
Built-in Microphone, answer to the phone calls when paired with mobilephone.
Built-in rechargeable Li-on battery , charge directly from USB port.
Up to 10 hours music time , 150 hours stand by time.
Wirelessly enjoy stereo music from all A2DP enabled devices, such as iPone 4 5 iPad, PC/laptop, PSP, laptops ...