Black True Wireless Earbuds by FANTECH Wave 13 TW13 Comfortable & Lightweight Specifications for the Custom Tuned Driver Digital Display Touch Control Bluetooth 5.3 Version Bluetooth Version 5.3; Effective Range: 10m; Driver Size: 10mm Listening Duration: 50% for up to 4 hours Standby Time for Volume: Up to 80 Hours Time needed to charge: about two hours Earphones Battery: Charging Case for 30mAh Batteries 180mAh battery Plug for charging: Type-C For more earbuds, see the FANTECH Wave 13 TW13 True Wireless Earbuds in Black.