... speaker 0.5W/8Ω,Vdc=7.2V120mAAudio ouputBuilt-in 3W/8ΩConnect to external amplifier3.Connecting Diagram ... NoItemDescription1Power PortConnect the DC power, built-in lithium battery, lithium battery can be charged2Power SwitchTurn ... content5Work State LEDWhen play , it turn light, when plug in SD card , it flash once6Digital KeyRemote keys7Remote LEDWhen press ...