... 'GP:81500pcsAccessories1)USB power supply cable2)3.5mm audio tie-in Function: (1) Can play music by link to mobile phone ... ,MP3,MP4,PC,IPOD and other audio devices, if you devices have 3 ... Source:(1) DC 5V adopter(2) USB 5V Cable(connect with) from computer. mini hamburger speaker with build-in battery