This solar watch is water resistant to 10 ATM. You can measure your lap time.

Water resistant to 10 ATM.
Tough Solar (solar charging system).
World time: 48 cities around the world (31 time zones, with daylight saving setting function) + UTC (Coordinated Universal Time).
Stopwatch (1/100 second (less than 10 hours) / 1 second (more than 10 hours) / 100 hour count / lap/splits / up to 120 LAP memory (lap counter 01 to 999) / log data up to 60 memory (data numbers, measurement start month/hour, minute, lap/split time, lap number, max. Wrap Display)
Timer: Interval measurement timer that can be set up to 2 times (set unit: 5 seconds, maximum set: 99 minutes 55 seconds, 1 second increments, and repeat (can be set up to 10 times) function).
5 time alarms (with snooze function for only 1 alarm), Hourly time signal.
LED light (afterglow function, afterglow time switching (1.5 seconds/3 seconds) included)
Fully automatic calendar.
● Switch sound between ON/OFF
Power saving function (after a certain time passes in a dark place, the display will turn off and save energy)
Battery indicator display.
Switch between 12 and 24 hour displays.