YS Electronic Stopwatch Timer Training Running Watch, Style: YS-8100 100 Memories (Black)

1. Button design, comfortable and not stuck, reinforced, durable2. Waterproof for life, waterproof against rain and sweat, just wipe it dry after use3. Can be turned off, the clock does not need to be reset, save energy4. Function: stopwatch, clock, calendar, countdown, alarm clock, metronome, shutdown, mute5. Power supply: contains a CR2032 button battery6. Material: ABS7. Screen size: about 3.5x2.3 cm8. Overall size: about 7.5x6.2x2.1 cm9. Weight: about 65 grams