Feature:
Connect two bluetooth service at one time.
USB cable inbuilt decoding sound card.
High level bluetooth compatibility.
Wireless and wired.
Microphone inbuilt.
Proteins earbuds
Deep bass.
Folding.

Headset section:
bluetooth version: 4.0
support music format: mp3/AAC
support audio rate: 8--96KHZ
transmission range: 0--15M
frequency response: 20Hz-20KHz
MAX OUTPUT POWER: 2*15mw
USB VERSION: High speed 2.0
BATTERY: Rechargeable polymer lithium battery (3.7V400maH)
continuous playing time:About 22 hours(full powertest)
Charging Power: PC USB port;DC 5V(500MA) charger
charging time: Less than 4 hours

Package Contents:
1 x Headphone (with retail package)