Portable public address system ak8-04 Details: Model: ak8-04 Power: 45w Speaker: 8" Built-in battery: 12v/4.5ah Wireless microphone: 1pc Ac65-265v(50-60hz), so customers have no need to worry about power. 3, customized order accepted. 4, best product with excellence after-sale service. The product series are closely designed for consumers. The built-in one channels wireless microphone receiver module, which can avoid interfering with the other wireless products. The unique usb interface can connect usb disk and play music, which can let you enjoy the fun of music anywhere and anytime! Features: Usb/sd/mmc/mms card player , mp3 format Built-in 12vdc 4.5ah lead-acid rechargeable battery Built-in dual channel vhf receiver 45w max. Power output Two handheld wireless microphone Wireless microphone volume control One 1/4" microphone input One 1/4" microphone volume control One 1/8" (3.5mm) aux audio input (suitable as an ipod input) Aux audio input volume control One 1/8" (3.5mm) mix output Built-in 12vdc charger Echo control Tone control Eq control One remote One 12vdc input Dimensions (w x d x h): 7.1" x 4.3" x 11.4" Service range: 120ft Recharge time: 6 hrs Transmitter) x2 Remote x1 Standard packing