Pyle Sports PSWGM64BK Gymaster Fitness Multi-function Watch with Pacer, 50 Lap Chronograph Memory, 4 Countdown Timers (Black) Range: 40-180 beats per minute Daily Alarm 1 Daily AlarmChronograph Resolution: 1/100 second Range: 9 hours 59 minutes 59 seconds Memory: 50 lapsCountdown Timer 4 Countdown Timer Resolution: 1 second Range: 23 hours 59 minutes 59 secondsBacklight Electro-Luminescent Water Resistant Sold as : Unit Pacer - Resolution: 1/100 second - Resolution: 1 second Range: 40-180 beats per minute - Range: 9 hours 59 minutes 59 seconds - Range: 23 hours 59 minutes 59 seconds Daily Alarm - Memory: 50 laps - Backlight Electro-Luminescent 1 Daily Alarm - Countdown Timer Chronograph - 4 Countdown Timer