Rugged, water-resistant design with Ultimate Skip Free G-Protection technology for active use. Built-in FMAMTVweather-band digital tuner with 51-station preset memory. Includes headphones and AC adapter. 40 hours playback with 2 AA batteries, works with rechargeable batteries (no batteries included). 2-position automatic volume limiter system (Avls) conserves batteries. Go ahead and play hard, because this Sony S2 SportsM-Y water-resistant portable CD player can take it. It comes with a built-in synthesized tuner with Amfmtv and Weather bands. With the skip-free G-ProtectionM-Y system, you can listen to your tunes wherever you want and never miss a beat. You can even play your Cd-Rrw discs, and the digital tuner features 51 presets that enable you to find your favorite stations with ease.