MODEL:HI.T1.Features:MCUcontrolcircuit,360-degreerotaryvolumecontrol,andLEDindicatorlight.2.Configuration:Host1pcs,USBspecialcable1pcs,productspecification1pcs,puremetalcrust.3.Specificati***:a.)Powersupply:DC5V~6V,built-inrechargeablebatteryPowerc***umption:Max2.5WFrequency:100Hz~20kHzcanusepoweradapterforcharging)