PSCDS - Audio CD Round and Break Timer
Double CD - 2 and 3 minute round workouts
Train for the real fight without a costly timer.
Ideal for individual or gym use - works on any CD player. Choose from 2-minute or 3-minute round discs. 12-round CDs include round start/end bell, 30-second warning whistle and (10-seconds-out) knock signal before next round begins. An economical and portable alternative to a full-size timer.