The Casio G-Shock AQ-S820W-1AV is a solar-powered watch with 10-bar water resistance, drawing design inspiration from aircraft instrument panels. It features a round, flat bezel and high-visibility white indexes and hands. A convenient LCD at the 6 o'clock position displays the date, day, and world time.
- Case size (L× W× H): 52.5 × 50.1 × 12.7 mm
- Weight: 46 g
- Case and bezel material: Resin
- Band material: Resin Band
- Water resistance: 10-bar water resistance
- Power supply and battery life: Tough Solar (solar charging system)
- World time: Displays time for 48 cities (31 time zones, daylight saving on/off) + UTC, with home city swapping
- Stopwatch: 1/100 second, 60-minute capacity, split time
- Timer: Interval timers for up to 2 preset times (set in 5-second increments, max set 99 minutes 55 seconds, measured in 1-second increments, repeat function up to 10 times)
- Alarm: 5 daily alarms, hourly time signal
- LED backlight: With afterglow and afterglow time selection (1.5 seconds/3 seconds)
- Full auto-calendar
- Operation sound ON/OFF switchable
- Power saving function (dims display in darkness)
