The instruction in Russian how to adjust fitness hours on phone. To date, mobile technologies have entered the life of almost every person and occupy a leading position in it, if we talk about the frequency of use of certain devices. A modern smartphone has not been positioned as a toy for a long time, since its functionality has turned the device into a full-fledged working complex. Fitness watch is a modern “smart” bracelet that can count steps, calories, distance traveled, as well as capture