Stopwatch 1/100 secs, measuring capacity 100 hours, intermediate time, countdown timer with repeat function, 2 time zones, 5 multi-function alarms (signal + snooze), 12/24 hour display, auto-LED illumination, calendar up to 2039. Plastic watchglass, domed, housing and strap: resin, waterproof up to 50 m, battery type: CR2025 with 10 years service life.