Mini TWS Earbuds w/USB Charging

Wireless version: 5.0 Support range: 2.402-2.480GHz Connection distance: 10M Speaker model: 6MM Speaker size: 10MM Impedance: 32ohm Polymer lithium-ion battery: 50mAh * 2 Charging chamber polymer lithium-ion battery: 500mAh Current use time; 3 -4 hours with the charging box. The use time is about 11 hours. The ear charging time is 1 hour. The charging time of the charging box is 2 hours. Function: automatic docking / pairing out of thnt use time; 3 -4 hours with the chargine warehouse. Ear call. Complies with FCC, Prop 65. 8.66" L x 5.51" W x 2.76" H