1. Enlarge the screen for clear reading
2. Edge arc treatment, comfortable touch, non-slip and wear-resistant
3. With lanyard, easy to carry and not easy to lose
4. Functions: stopwatch, clock, date, day of the week, alarm clock, timekeeping
5. Power supply: contains a 3V button battery
6. Material: metal
7. Size: about 6.5x5.5x1.3cm
8. Weight: about 105 grams