Bluetooth version: Bluetooth V5.0+BR+EDR+BLE

Bluetooth Protocol:a2dp/avctp/avdtp/avrcp/hfp/spp/smp

Frequency Range:2402MHz-2480MHz

Transmission distance: outdoor straight line distance 10M

Battery capacity: polymer lithium battery 50mah

Charging box battery capacity: 500mah

Listening to music time: 3hours Up and down music / pause playback

Service time: making telephone 4-7 hours,playing music 3-4hours

Standby time: 10-15days

Charging time: About 2H

Charging: 5V /500mA

Standby current: 4uA

Stereo: Yes

Earphone Weight: 3.5G

Earphone Size: 1.1*2.5*2.2cm

Package include:

1*wireless earphones(1pair)

1*user Manual

1*charging box

1*charging cable