Microlight a built in light illuminates the watch face from the side neo display a luminous coating provides long term illumination in the dark after only a short exposure to light daily alarm the daily alarm reminds you of events that recur every day by emitting an audible signal at the set time snooze feature each time you stop the alarm it sounds again after a few minutes resin case 1 year mdash 1 battery the aa battery supplied the watch with sufficient energy for approx one year d