To ensure that you have everything in view even in dark surroundings, the display is illuminated by a micro lamp at the touch of a button. Stop function Elapsed time, split time and end time are measured with an accuracy of hundredths of a second. The measuring capacity of the watch reaches up to one hour. The daily alarm is a reminder of events that recur daily, with an acoustic signal sounding at the set time. Once set, the automatic calendar always shows the correct date. The time display can be set to either 12- or 24-hour format. Resin consists of synthetic resin and is the ideal material for bracelets due to its extreme durability and flexibility. The battery supplies the watch with the necessary energy for about 7 years. This model is waterproof according to DIN 8310 or ISO 22810, so it can withstand slight splashes. Avoid major contact with water.