LuckyStone Stopwatch

LuckyStone stopwatch is a hand-held, lightweight, waterproof, multifunction time tracker. The device is suitable for runners, athletes, referees, and coaches and It has a built-in battery, alarm, date, time, and 3-display functionality.

Pros
Device is light
Water-resistant
Has 3 display modes

Cons
Battery lifespan is small
Basic functionality