REMAX Rb-680hb kinyin series Bluetooth wireless gaming headphone – up to 16 Hours playtime Features Bluetooth Version: V5.3 Transmission distance: up to 10m Driver unit: 40mm Frequency response: 20Hz-20KHZ Rated power: 15mW Impedance: 32 Battery Standby time: up to 66H Playtime: 16H Charging time: 3 H battery capacity:400mAh AUX cable is included More earphone