Sony D-SJ301 S2 Sports CD Walkman Rugged, water-resistant design with Ultimate Skip Free G-Protection technology for active use 9 playback modes (including shuffle play, repeat play, and 64-track program play) Includes headphones and AC adapter 2-position automatic volume limiter system (AVLS) conserves batteries 50 hours playback with 2 AA batteries, works with rechargeable batteries (no batteries included)