Requires x3 AA batteries (not included).Compact portable radio.MP3 speaker with AM/FM radio.Built in amplifier.Works with any smart phone or tablet.Product information:14 x 7 x 15 cmMaterial/s: PVCBorn and bred from Aussie beaches, our summer accessories aren't optional. They're essential. Take a trip down memory lane and be sure to pack your tunes with the SUNNYLIFE Malibu Retro Sounds.