Specification:
Wireless Version: V5.0 /Pop-up
Automatically power on/Pairing(Open the cover to power on/pairing)
Amazing sound quality
Frequency: 2.4GHz

Microphones sensitivity: 42Db

Range: About 10M (33feet) in clear space

Working Time: up to 4 hours

Standby Time: approx.150hours
Charging time :approx. 1-2 hours

Earbud: 40mAh rechargeable Li battery

Charging box : 400mAh

Charging power: DC5V