Sony ZS-X1 S2 Sports CD Boombox with FM/AM Radio and ESP CD Shock Protection CD and radio boombox with 2-position Mega Bass low-end sound enhancement ESP CD shock protection minimizes skipping during CD playback Digital FM/AM tuner with 30 station presets Water-resistant design with high-impact plastic housing is designed for outdoor fun Uses two 4-inch speakers, runs on 6 D batteries (not included) or supplied AC power adapter