Yamaha, MP3 Player, models:

BF-1 - BODiBEAT Music Player/Heart Rate Monitor	Owner'S Manual
BF-1 - BODiBEAT Music Player/Heart Rate...	Startup Manual Owner'S Manual Quick Manual
BODiBEAT BF-1	Owner'S Manual
BodiBeat BF-11	Owner'S Manual
POCKETRAK 2G - 2 GB Digital Player	Brochure & Specs Reference Manual Service Manual Owner'S Manual