The Indiglo night-light uniformly lights the surface of the watch dial using patented blue electroluminescent lighting technology. It also offers water resistance to 330 feet (100 metres) and a durable leather strap. Just pull the stem halfway out, and turn until desired date is reached. With the Quick Date function, you can set the date on the watch without turning the crown for every 24-hour period. An easy to operate date window is located at 4 o’clock. The unique dial features numerals in increments of five up to 60 and three sub-dials that track minutes, seconds, and 1/20 of a second for up to 30 minutes.