... selling heart rate watch 1,precision , heart rate monitor 2,wireless 3,waterproof 4,alarm 1.heart rate mode:Wireless heart rate transport watch(with chest belt)Current heart rateAVG heart rateMAX heart rate alarm Min heart rate ... of the week)8.other:EL backlight, 3ATM waterproof, high-capacity battery CR2032, CE and ROHS certification wireless heart rate watch Product Photo Show: