[citation needed] All models have a 1.9 inch TFT LCD display with a resolution of 220 by 176 pixels and a built-in monaural microphone and FM tuner; recordings of the latter two are saved as PCM WAV files.

[citation needed] The Fuze supports MP3, WMA, PCM WAV, and, since the 1.01.15 firmware revision, OGG Vorbis and FLAC audio codecs.

The Fuze has a MicroSDHC slot that can be used for standard media storage and for the proprietary Sansa services known as Slotradio and Slotmusic.

The connector on the Fuze supports Line Out Dock (LOD)[7] which is preferred to power an external amp, bypassing the internal headphone amplifier.

Alternatively, one may install open source Rockbox firmware, which supports numerous formats and offers greater flexibility.