Built-in display illumination – illuminates the watch face from the side. Stopwatch – 1/100 sec. – 1 hour Elapsed time, split times and final time are measured to the nearest hundredth of a second. The watch can measure times of up to an hour. daily alarm The daily alarm emits an acoustic signal at the scheduled time to remember those events that are repeated daily. automatic calendar Once set, the automatic calendar always shows the correct date. 12/24 hour timekeeping Hours are displayed in either 12 or 24 hour format. acrylic glass leather strap adjustable closure The closure can be easily individually adjusted to provide maximum comfort. Water resistance classification (WR) according to ISO 22810 This model is waterproof according to DIN 8310 or ISO 22810 and withstands small splashes of water. Any further contact with water should be avoided. Measurements: 33.5 x 28.6 x 8.6mm Weight: 15g