Monitor speaker pa system with woofer and amplifier inside ak12-209b Specification: Model: ak12-209b Power: 60w Speaker: 12" Built-in battery: 12v/7ah * 2pcs Wireless microphone: 2pc Card: usb/sd card at do the research, development and production all by ourselves, warmly welcome customers make cooperation with us, 1, years of manufacture experience. 2, all products support wide-range input power, 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. This is a portable pa system with 12" speaker, with cd player, with uhf wireless microphone 12 inch plastic portable pa active speaker A voice priority feature that mutes the music when mic is used. Echo control on wireless mics Features: Model ak12-209b Power supply :ac160-260v(50-60hz), built-in 2 pcs dc12v/7ah rechargeable battery, one dc12v input jack, led power indicator and charging indicator Amplifier power:160w, mono Speaker:12'' woofer, high senstitive tweeter Wireless pa system Speaker 4 ohm 12 inch woofer Frequency band uhf 470-865mhz Rms power 80watts Function cd player, usb/sd card player Line in/out 6.3mm microphone jacks (2 pieces) , audio input/output (rca) , 3.5mm mp3 input Charing time 6-8 hours Operating time average of 2-6 hours depending on volume , and use of components Power supply ac160-260v(50-60hz) , dc 12v external Rechargeable battery 12v/7ah (2 pieces) lead acid battery Frame material pp , metal Special designs ·automatic charge design ·battery chagres while in use ·digital echo control ·microphone prority switch ·one touch retractable luggage carry handle Dimensions 61cm h×42cm w×38cm d Weight approximately 27kg Standard packing