EZON 5ATM Waterproof Digital Sports Watch – Tracker, Stopwatch, Fitness Watch L008Professional Sports Features: Countdown mode with customizable multi stage training (warm up, workout, rest, repeat, sets, etc.), supporting interval training needs. The timer can run for up to 23 hours, 59 minutes, and 59 seconds with an accuracy of 0. 01 seconds. Lap Timing: Features single lap and split timing (records up to 10 laps), providing clear insights into running swimming performance. Data mode also allows you to review historical timing