... speaker A88-Blue color for IPAD/iphone 1.FM radio, 2.USB/SD card slot Digital portable Mini speaker for Iphone, computer,CD, MP3 ... of ordinary, with many colors, several solution, for your option4. Several power supply manners including battery, computer USB, adaptor DC ... (external diameter 45mm), Magnetic resistant 4 Ohms*Power supply: 5V/1000mA AC power adapter, Built in Rechargeable Li-ion Battery* ...