Anker PowerConf H500 Manuel D'utilisation page 14

Specifications
Input
Rated output power
Battery capacity
Charging time
Talk time
Playtime (varies by volume
level and content)
Driver size
Frequency response
Impedance
Bluetooth version
Bluetooth range
5V 0.75A
5 mW
500 mAh
< 2 hours
Up to 24 hours (Transparency off)
Up to 35 hours (Transparency
40 mm
10 Hz - 20 kHz
5.0
30 m / 100 ft
off)
EN 12