Ugreen Hitune Wireless Earbuds.

Has a frequency Response of 20Hz-20kHz. Uses Type-C cable to charge. Limited charging voltage :5.2V. Open-design for Enhanced awareness and all-day comfort. Charge earbuds :About 1.5 Hours. Charge charging case: About 2 Hours Charging case output: 5V=300mA Capacity earbuds :50mAh 3.7V (1.85Wh)