Casio W800H-1AV Digital Blue Resin

The Casio W-800H-1AV remains a benchmark in practical digital timekeeping, known for its robust 10-year battery life and water resistance rated up to 100 meters. Originally introduced as a no-nonsense everyday companion, this model continues to attract users for its blend of reliability, legibility, and function-first design.

Encased in black resin with a compact 44.2mm width and 13.4mm thickness, the W-800H features a high-contrast LCD screen with clear segmented numerals. The large digital display includes time, day, and date, and is enhanced by an amber LED backlight for low-light readability. A simple rectangular bezel and slightly raised edge help protect the crystal from impact.

Built around Casio’s trusted 3240 module, the watch supports a 1/100-second stopwatch, hourly time signal, auto calendar (pre-programmed until 2099), and daily alarm. Timekeeping can be toggled between 12- and 24-hour formats, and the watch accommodates time zone adjustments with a dedicated dual time mode.

The textured black resin band, designed for comfort and durability, secures with a standard buckle. At just 37g, the W-800H wears light, making it a practical option for everyday activities, from work commutes to trail runs.

Revered for its longevity and straightforward utility, the Casio W-800H-1AV is often compared to digital icons like the F91W but offers upgraded durability and extended battery life—a digital classic engineered for real-world wear.