Product Specification: 1.Bluetooth specification:V5.3 2.Bluetooth Profile:A2DP,AVRCP,HFP, HSP 3.Working voltage:3.1V~4.2V 4.Charging voltage:5V-1A 5.Speaker specification：8mm*2 6.Frequency response:20Hz~20kHz 7.lmpedance:32Ω 8.Battery capacity of the
