Multifunction watch with pulse rate monitor, chronograph, countdown timer, and alarm 1-second resolution countdown timer with working range 1 minute to 19 hours 59 minutes Measures pulse rate in beats per minute with touch of finger Pulse rate monitor features "Safety Range" and "Warning Sound" 1/100-second chronograph with split function up to 100 hours Time of day with calendar Daily alarm and hourly chime Back-light for night time or low light use Water resistant up to 50 meters. Instructions included.