This model is waterproof according to DIN 8310 or ISO 22810, so it can withstand light splashes. Greater contact with water should be avoided. The 8-digit calculator can add, subtract, multiply and divide. A second local time can be set and recalled. Ideal if you often call overseas, for example. For athletes and all who want to know exactly: Elapsed time, split time and final time are measured with an accuracy of hundredths of a second. The measuring capacity of the watch lasts up to 24 hours.