This Bluetooth Stereo Headphone is highly different from with other common headphones. The new wireless bluetooth headphone with bluetooth 4.0+EDR and Microphone has a small Lithium polymer battery inside, so you can charge it with USB cable if the headset is low-battery.

Specification:
Bluetooth Version:V4.0+EDR
Bluetooth profiles Supported:A2DP,Headset,Hands-free
Frequency:2400-2483.5MHz
Nominal Charging Time:2-3 hours
Talk Time:Up to 25 hours
Music Playing Time:Up to 20 hours
Standby Time:Up to 400 hours
Operation Range:Up to 10 meters

Package:
1x Stereo Headphone
1x USB Cable
1x Using Manual