Digital AM/FM Tuner allows you to listen to your favorite radio stations. Preset up to 20FM and 10AM stations. The Sony D-F041 has CD-R/RW Playback burned either in a PC or a home recording deck. Create custom mixes from your existing personal music collection. Skip-Free G-Protection(TM) Technology continues to provide quick recovery from both horizontal and vertical shock. 8 Playback Modes offer many predetermined choices in the playback of CDs. You can easily program your favorite songs from multiple CDs and play them back with the touch of a button. This feature makes it easy to program and playback a personalized mix of your favorite songs. Digital Mega Bass(R) Sound uses digital processing technology to produce rich, deep, bass tones with extremely low harmonic distortion. Digital Volume Function provides precise adjustment of volume level, while the volume level appears on the LCD display. 2 Position Automatic Volume Limiter System (AVLS) maintains volume output at levels below distortion threshold for cleaner sound reproduction. 30 Station Presets 8 CD Playback Modes Automatic Shut-off Menu Options Bookmark Playback Function for Easy Programming Digital Mega Bass(R) Sound System Digital Volume Control Function 2 Position Automatic Volume Limiter System (AVLS) Antenna System - AM Built-in Ferrite Bar Antenna, FM Headphones Frequency Range - AM 531-1710Hz, FM 87.5-108MHz Station Presets - 30 (10 AM, 20 FM) Frequency Response - 20-20000Hz Output Power - 5 mW + 5 mW (at16 ohms) Headphone Output - 1 stereo mini jack DC-In - 4.5V Powered by 2 AA batteries (not included) Battery Life - Up to 35 Hours (Up to 16 Hours with 2x AA Alkaline Batteries / Up to 35 Hours for Radio) Dimensions - 5 5/8 x 5 5/8 x 1 1/8 inch (139.8 x 139.8 x 27.9mm) Weight - 7.1 ounces (200 grams)