M28 TWS Wireless Gaming Earbuds Item Headphone Model ✅ M28 Headphone Type Earbud Connectivity Bluetooth Bluetooth Version V5.1 Bluetooth Distance About 10m Frequency 20Hz-20KHz Driver Unit 8mm Battery Capacity Headset: 50mAh Case: 2000mAh Audio Play Time About 5 Hour Standby Time About 180 Hour Dimension 12 x 7.3 x 4.7cm