Headset stereo headphones

feature:
Long talk time, all universal phones, music player with A2DP
Function keys: volume +-, music playback, pause, previous song, next song
Support all Bluetooth devices, then hang up, reject the call, call back to the last number
specification:
Voltage: 3.7 volts
Talk time: 14 hours
Main chip: 3.0 + EDR
Speakers: 30 speakers
Standby time: 250 hours
Bluetooth version: V3.0 + EDR
Compatible: V2.1, V2.0, V1.1
Charge and discharge protection: IC
Rechargeable battery: lithium polymer
Frequency range: 2.4G
Frequency response range: 20-20 KHZ
Transmitting power: Class2
Transmission frequency: 2.4 GHz
Transmission distance: 10 meters
Average sensitivity: 105DB (at 1 KHZ + 3 DB