Ключевые слова: application, background, black, buckles, business, button, cell, chronometer, circle, clamp, clock, competition, concept, countdown, counter, counting, crossfit, deadline, equipment, faster, finish, gym, hour, international, lock, locking collar, measure, measurement, meter, minute, mobile, modern, movement, online, phone, precision, qualifier, speed, sport, start, stepper, stop, stopwatch, time, timer, training, video,