Sports wireless charging in-ear $ 19.09 Bluetooth version: Bluetooth5.0 Support protocol: AVDTP1.3/AVDTP1.4/GVRADP1.3/A2DP1.3 /HFP1.7/HSP1.2/AVRCP1.6/SPP1.2/GATT1.0 Bluetooth range: 10m/3.6Ft/360 degrees Battery capacity: 50mAh2 Charging time: 1.5-2 hours Standby time: about 71 hours Talk time: about 4 hours Music playback time: about 4.5 hours Speaker size: 6mm Frequency: 20Hz-20000Hz Impedance: 16 Sensitivity: 943db Host output: 3.7V-4.2V Charging box battery: 700mAh Charging box size: 65.3133mm
