Bluetooth headphones V4.1

Type of connectivity: wirelss

Action radius: less than 10 meters

Input: 5V / 130 mA

output: 2 x 20 mw

battery: 3.7v / 80 mAh li-ion

speech time: up to 4 hours

Listening time: up to 3-4 hours

loading time: 30 minutes

waiting time: 50 hours

Recharge by USB

weight: 0.042 kg