4 inch 4 digit large led digital timer, much more beautiful & dignified figure, compact structure, legible display, low ... Blue;Various modes for selection: time of day, countdown timer, count-up timer, stopwatch;Count-up & Countdown ranges 00:00~99:59 ... precision: daily deviation <=2 secs (in 24 hours);Installation: indoor wall-mounting;Technical SpecsOperational environment -10 °C ~50 °C , relative ...