Dragon T8 Ultra Powertube Bluetooth 5.0 earbuds. This powerful T8 gives you the ultimate music experience with latest 2nd generation of Bluetooth 5.0 technology. This device is equipped with 8D surround sound providing you an amazing music experience. Try those 8D music and you will realize the difference. Easy operate : 1 simple click to: pause / play. Double click left ear for next track: double click right ear to adjust volume +:   Specifications: Music playtime is approximately 3 to 4 hours per charge Battery case capacity: 3000mAh. Fully charge box can charge up your earbuds twice. Headphone single ear capacity: 50mAh Bluetooth distance: about 30 ft Waterproof:  Rainproof grade. not mean to swim with the device and do not put in a glass of water. Connection method: single/double. Sensitivity: 120dB Impedance: 32Ω Charging voltage: 3.7V Package Included:1 x earphone1 x charging cable3 pair of ear cap