Time, date and alarm function: these sport stopwatches are designed with countdown timer, calendar clock and alarm, which allow you to manage the time better in sports and daily life, perfect for sports coach, easy to view time and record dates.Easy to operate: our digital stopwatch timer can easily start, stop and reset your timing by pressing this outer button, featured with the group of count up function (1/100 sec, maximum: 23 hour 59 min 59 sec) to precisely measure multiple events.Lightweight and easy to carry: each sport stopwatch timer comes with a lanyard; You can take it with your hand, put it in your pocket, or stowed around the neck with the lanyard, easy to carry out and avoiding its missing.Waterproof material: our waterproof sport timers are made of quality plastic material, lightweight, lasting and weatherproof to use; You can carry it with you even some underwater exercise, such as swimming, diving, surfing and more.Wide applications: our sports stopwatch are the perfect time measurement device for athletes, runners, coaches and referees, suitable for running, swimming, training, tracking matches, competitions, athletics and so on.Colour: blackMaterial: plasticPackage Contents:24 * Stopwatch timerOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.