SPECIFICATION: Model: JR-T03S Bluetooth 5.0 new upgrade, lossless transmission, faster speed Popup pairing new upgrade, pair and connect automatically when
MODEL: M19 Bluetooth V5.3 Bluetooth Profile:A2DP,AVRCP, HFP;HSP Working voltage:3.1V~4.2V Charging voltage:5V-1A LED digital power display Battery capacity of the