The Casio Countdown Timer WS1800-3A Digital is a multifunctional sports watch built for performance, clarity, and everyday durability. Its wide, retro-inspired graphic display allows the countdown timer to be read clearly at a glance, making it ideal for training sessions, competitions, and active lifestyles. Featuring a lightweight resin case and bezel measuring 48.2 × 45 × 13.8 mm and weighing just 41g, the watch is comfortable on the wrist and paired with a durable resin band to fit wrists from 145–215 mm. The spherical resin glass protects the display, while 100-metre water resistance ensures reliable use in wet conditions. Powered by a CR2025 battery with an impressive approximate 10-year lifespan, the WS1800-3A includes world time across 29 time zones (48 cities), a 1-second stopwatch with elapsed time and event timer modes, and versatile countdown functionality with preset timers from 10 to 45 minutes and up to nine interval timers with auto-repeat. An amber LED backlight with afterglow provides clear visibility in low light, while practical features such as a daily alarm, hourly time signal, full auto-calendar to 2099, ±30 seconds per month accuracy, and 12/24-hour time format complete this dependable, sports-ready digital watch. - Case size: 48.2 × 45 × 13.8 mm - Weight: 41g - Case & bezel: Resin - Band: Resin band (fits 145–215 mm wrists) - Glass: Resin / spherical glass - Water resistance: 100 metres - Battery: Approx. 10-year battery life (CR2025) - World time: 29 time zones (48 cities), daylight saving on/off - Stopwatch: 1-second accuracy, elapsed time and event timer modes - Timers: Preset countdown timers (10–45 minutes), up to 9 interval timers with auto-repeat - Alarm: Daily alarm and hourly time signal - Light: Amber LED backlight with afterglow - Calendar: Full auto-calendar to 2099 - Accuracy: ±30 seconds per month - Other: 12/24-hour format, mute button tones, regular timekeeping (hour, minute, second, date, day)