Bluetooth device: M1
Charging time: 2h
Game time: 3-4h
Battery capacity 500mAh
Materials: Metal
Function: Support TWS interconnection
Andantage: Anti-scratch/anti-fall/waterproof
Waterproof IPX5 Waterproof: Waterproof IPX5
Product Size: 3*2.5cm/piece
Gross weight: 70 g/piece