Model: AIR 7 Bluetooth version: 5.2 Color: Black Battery: 300mAh Game time: 4 hours Standby time: 60 hours Battery capacity: 45mAh/400mAh Effective range: 25 meters Charging voltage: 5 V/1 A Speaker impedance: 8mm 32 ohms Transport packaging: cardboard box Trademark: A i L Origin: China HS code: 8518220000 Production capacity: 500000 pieces