Born 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 Watermelon Beach Sounds. Requires 4 x 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.