ATW-330 Max Black 800 mah in-ear headphones

Material: ABSBluetooth Version: V5.0Interface: USB-CPlayback Time: 4.5 hours (earbuds) / 60 hours (with charging case)Battery Capacity: 30 mAh × 2 (earbuds) / 600 mAh (charging case)Charging Time: 1 hour (earbuds) / 3 hours (charging case)