Timex Ironman Triathalon M588 Watch Turquoise Heart Rate Monitor New Battery

Face is 38 mm wide, and size shown in picture, mint condition watch, brand new Swiss battery, can be paired with a heart monitor. I would assume it would need to be compatible with the watch it is a neat feature not all Ironman watches have. Features Indiglo, alarm, stop watch, recovery mode, timer and review all extras as well