Combines the two most desired timing functions: a dual split stopwatch with an advanced countdown timer. Multi-mode Stopwatch – lap, split or dual split timing modes. 30 memory recall of previous readings in ascending or descending order. 1/100 second resolution up to 24 hours. Automatically counts up to 1000 readings. Multi-mode countdown timer – stop, repeat, or count-up modes. Preset time values from one second to 24 hours with 1/10 second resolution. Water Resistant to 30 meters. Break-Away Safety Lanyard helps prevent accidents, promotes safe use. Ten year warranty; Lithium battery CR-2032.