UPGRADE NOISE CANCELLING Playtime/Talk time: About 6 hours Charge time: 1 hour Standby time: 120 Hours Sound Quality: Stereo Sounds with High fidelity Bass Charging box battery capacity 1800mAH Charging box battery capacity: Bluetooth Version: 5.0 Transmission distance: 15M - 30M Headset Battery Capacity: 35mAH Playtime/Talktime About 6 hours Charge time: 1 hour Standby time: 120 Hours Sound Quality: Stereo Sounds with High fidelity Bass Charging box battery capacity: 1800mAH Bluetooth Version: 5.0 Transmission distance: 15M - 30M Headset Battery Capacity: 35mAH