1.Specification: Item model ED-839 Speaker unit 8''+8''woofer & 2''tweeter Battery 7.4V/3600mA Power 40W Input USB/TF Card input; FM Radio,Bluetooth,MIC inputx Function Aux in USB/TF Card input; FM Radio Bluetooth&Recording, MIC input, Different modes Disco light BASS/Treble/Mic Volume control/Mic Bass/MIC treble/Guitar Vol MEGA BASS button Charge Power cable Product Size 31x30x73cm Packing Size 38x35.5x80cm Accessory Remote control/User Manual/Power cable 2.Our advantage: 1)Our product have passed ISO9001,SGS,CE,CCC,ROHS and so on. 2)We are a factory with strong technology and good after sales. 3)We can design the amplifier and speaker by our clients. 3.Our company 4.FAQ Q1:How long is the warranty for the speakers? A1:3year warranty Q2:How about the delivery time? A2:3-7days for stock.10-12days for new order depend on order quantity since receipt of 30%T/T deposit. Q3:Can you produce according to customers' design? A3:Yes we can,we are professional manufacturet,ODM are welcome. Q4:Are you a factory or trading company? A4:We can a manufacturer(with our own factory). We are a leading manufacturer,exporter and supply chain service provider on professional audio system. Q5:Where is your factory located?How can I visit there? A5:Our factory is located in BAIYUN District,Guangzhou City,Guangdong Province,China. About 30mins by car from Guangzhou Baiyun Airport. Q6:Can you do Owm and ODM? A6:Yes,both.We can put your idea into products. We have professional research develoment team. develop the products according to customer required.