Oregon Scientific HR102 Heart Rate Monitor is an entry-level heart rate monitor that is user-friendly and easy to understand. The instant heart rate pulse reading makes it quick to get active without much delay of signals between watch and chest strap. The watch is manually programmable HI/LO heart rate training zone therefore ensuring you are staying within the zone that maximize your training either in the aerobic or anaerobic zone. Whether you exercise for health or sport, it will ensure that you get the most from your workouts. It has stopwatch with count up timer: 99:59:59. HiGloTM backlight and low battery indicator. It is water resistant to 30 meters.