To power the projector with the built-in battery, simply turn the projector on.Once connected, the power indicator light will illuminate red on the projector to show it is connected to power.
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To power the projector with the Micro USB to USB cable, connect the Micro USB to the projector’s and plug the other end into a USB port.
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3.5mm Audio out port - (Optional) Can be used to connect an external speaker or headphones.Power indicator light - This light will illuminate red when the projector is connected to power to show that the battery is charging or receiving power.System indicator light - This light will illuminate briefly as the device starts up, and will also come on if the projector's battery power is getting low.Power switch - Slide power switch forward (toward the projection lens) to power the projector on.Volume down control - Decrease the volume output of the projector.Volume Up control - Increase the volume output of the projector.Focus wheel - Roll left or right to fine tune the image focus.