Features: XL Display 3/8" digits. 2 button operations- easy to use. TZ programmable in single beats with audible & visual alarms. EZ-Set Target ZonePat.Pend Simply enter your age. Watch/Calendar 12/24hr. time of day with daily alarm. Water Resistant to 30M & Shock Resistant. Smart Calories Calculates w/ age, gender, HR, & activity. Nite Site electroluminescent night light.