Manufacturer Name: Oregon Scientific Displays current heart rate (does not display continuously) Tracks calories burned Stopwatch timer counts up to 99hr 59min 59sec 59milisec with 1/100th second precision 12/24-hour clock with alarm function and calendar EL backlight for easy viewing in low-light conditions Water resistant up to 164ft/50m Shock resistant up to 3ft/1m Requires one CR2032 battery (included) UPC: 734811506115