Gradient color bluetooth headset ES01 wireless to ear

Communication distance: about 20 meters (under barrier-free environment)

Bluetooth version: V5.0+EDR

Earphone working time: about 3 hours

Headphone standby time: about 50 hours

Charging time: about 2 hours

Battery type: polymer lithium ion battery

Support protocol: HFP/HSP/A2DP/AVRCP

Headphone battery capacity: 3.7V 50mah

Headphone charging time: about 1 hour