- HOTNESS UNHOT
Amazon has the Schwinn 20-Function Bike Computer (SW654 6PK) for $10 with free shipping on $25+. Normally around $18 or more. Tracks speed, distance, time, calories burned and more, and attaches easily to any handlebars. Lots of good reviews. Note: the model number seems to indicate that this is a 6-pack but the listing describes it as a single unit.