Sony Discman D-FJ61 features 30 station presets with direct preset keys offers convenient one-button tuning of your choice of 25 FM stations and 5 AM stations. Ultimate Skip Protection by Sony makes the CD Walkman player an ideal on-the-go companion, with greatly advanced digital-based system that provides 10-times faster shock recovery compared to conventional systems, ensuring virtually skip-free playing performance even during such active uses as jogging. New Compact CD Software size design is a slim 3/4" and weighs under six ounces, with overall dimensions practically as small as a CD itself. Up to 32 Hours Continuous Playback with 2 "AA" Batteries (optional) is a result of advanced Sony engineering and new IC chip set and new mechanism, providing very long battery life in continuous playback use. 64 Track RMS Programming offers extraordinary ability for you to customize the order in which tracks on a CD are played 9 Playback Modes give you many predetermined choices in the playback of CDs, including hearing one track over and over, or a selection of tracks in a desired order, or tracks in Shuffle (random) order, and more Track Loop Repeat provides seamless access to all tracks. Rechargeable Battery Capable (NC-WMAA/NH-WM2AA) allows use of either the supplied Nickel Cadmium NC-WMAA rechargeable batteries or optional Nickel Metal hydride NH-WM2AA rechargeable batteries. 2 Position Automatic Volume Limiter System (AVLS) maintains volume output at levels below distortion threshold, for cleaner sound reproduction.