1. All metal shell, wear-resistant and durable
2. Large screen and large font display, with luminous, easy to read the value
3. Button design, comfortable and not stuck, reinforced, durable
4. Waterproof for life, waterproof against rain and sweat, just wipe it dry after use
5. It can be turned off, the memory is still there after the screen is turned off, it can be muted, and the button will be muted after turning off
6. Function: stopwatch, clock, calendar, countdown, alarm clock, metronome, night light, can be turned off, can be mute
7. Power supply: contains a CR2032 button battery
8. Screen size: about 3.1x2.4cm
9. Overall size: about 7.3x6.4x1.5cm