L22 wireless bluetooth mini earphone

Transmission range: 10 meters
Functions: power display, voice control, call function, music support, multi-point connection, NFC function
Bluetooth protocol: 5.0
Channel: Stereo
How to use: Earplug
Applicable gift-giving occasions: opening ceremony, employee benefits, awards commemoration, anniversary celebrations, trade fairs, festivals, advertising promotions, housewarming, public relations planning, wedding, birthday, business Product Name: L21 L22

Bluetooth version: 5.0
Music / talk time: 4 hours
Standby time: 45h
Headphone charging time: 2h
Battery voltage: 3.7V
Battery capacity: 400mAh
Waterproof level: IPX5