Requires x4 AA batteries (not included).Works with any smart phone or tablet.Bluetooth wireless technology.MP3 speaker and AM/FM Stereo 2 band radio receiver.High output power and low distortion.Master and bass volume control.Aux-in audio jack (connection cable included).Micro USB DC jack.Play music off your device or off the AM/FM tuner.Sand and water resistant.Product information:17 x 8 x 20 cmMaterial/s: PVCBorn and bred from Aussie beaches, our summer accessories aren't optional. They're essential. Every beach trip deserves a soundtrack. Be a hero and bring the tunes with the SUNNYLIFE Monteverde Beach Sounds.