Bluetooth Bersion: V4.1
Bluetooth mode: Hands free/Headset/AV/AV RCP profile
Radio frequency:2.4GHz
Transmission power: Class2
The Transmission range: 10 meters
The charger power supply: input AC 110-240V output DC5V
Voice prompts
Volume control
Music time: about 5H
Talk time: about 5H
Standby time: about 180H