The Robic 30 Dual Memory Stopwatch with Countdown combines the two most desired timing functions: a dual split stopwatch and an advanced countdown timer. Other special features include a 30 dual memory recall of previous readings in ascending or descending order, preset time values from 1 second to 24 hours, time of day, alarm, calendar, a multi-mode stopwatch and more. Features • Multi-mode Stopwatch Lap, Split, or Dual Split timing modes • 30 dual memory recall of previous readings in ascending or descending order • 1/100 second resolution up to 24 hours • Multi-mode Stopwatch Lap, Split, or Dual Split timing modes • 1/10 second resolution during countdown • Preset time values from 1 second to 24 hours • Time of day, alarm, calendar • Completion alarm at conclusion of Countdown time • Shows current lap and split running times • Automatically counts up to 1000 readings • Multi-mode countdown timer stop, auto-repeat or count-up modes • 1/10 second resolution during countdown • Warranty: 1 year manufacturer • Battery Type: Lithium CR-2025 or equivalent • Battery Life: 4 year