... Engine-01Functionscan be connected with multimedia player; mobile phone, desktop, laptop...PowerUSB power supply, Li-battery powerDrive unit40mm*2*3wS/N ... durable and DIY music.* Support MP3, MP4, IPod, IPhone, iPad, computer, laptop ect. Usage:1. Connect: The attached audio line shall be ... output jack (such as MP3, MP4,Ipod,Iphone,PC, laptop and so on), and the attached adapter shall be connected ...