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)