1. High-definition screen, clear reading
2. Curved concave and convex sides, comfortable to touch, non-slip and anti-fall
3. With lanyard, easy to carry and not easy to lose
4. Button operation, simple and sensitive
5. Waterproof for life, waterproof against rain and sweat, suitable for various occasions
6. Specification: 1/100 second
7. Function: stopwatch, clock, date, countdown, metronome, alarm clock, mute, shutdown
8. Power supply: contains a CR2032 button battery
9. Material: stainless steel shell
10. Size: screen about 3.5x2.3 cm, overall about 7.1x6.1x1.3 cm
11. Weight: about 105 grams