YS Metal Stopwatch 3 Rows Display Running Training Electronic Timers, Style: YS-5100 100 Memories Goldenfir Wide application range and high

Wide application range and high safety factor

you don not need to remove it

Operating system: Windows XP / VISTA / 7 and above

Right Button Hold: Zoom in (focus)

but also reduces hair roots without pain

YS Metal Stopwatch 3 Rows Display Running Training Electronic Timers, Style: YS-5100 100 Memories Goldenfir Wide application range and high1. 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