Good Technology SoundsGood MP3 Audioplayer Springboard Module for Handspring Visor 64 MB MP3 player Transfer rate of 250 KB per second using USB connection (serial connection not supported) Plays over 10 hours using Visor's 2 AAA batteries Includes MusicMatch Jukebox and Good Desktop software for Windows 98, 2000, and Me Compatible with Handspring Visor