... better sound quality wireless flat art backgound music speaker,super slim speaker,Hifi sound quality,smart home,broadcast,hospital,wireless ... Using Philip digital amplifier processing technology,creating stereophonic effect. 2.Using Integrated controller(86*86MM),LCD screen with bule ... battery,it works 8-10 hours lastly after recharging 2 hours. Integrated Controller specification: Model No.:DS-2183 ...