Manufacturer details checked
Casio
AQ-S820W-5AV
- Manufacturer SKU
- AQ-S820W-5AVDF
- Case dimensions (L×W×H)
- 52.5 × 50.1 × 12.7 mm
- Weight
- 46 g
- Case and bezel material
- Resin
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Manufacturer model details
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- Manufacturer SKU
- AQ-S820W-5AVDF
- Case dimensions (L×W×H)
- 52.5 × 50.1 × 12.7 mm
- Weight
- 46 g
- Case and bezel material
- Resin
- Band
- Resin Band
- Water resistance
- 100-meter water resistance
- Power supply and battery life
- Solar powered
- Glass
- Resin Glass
- Compatible band size
- 145 mm to 215 mm
- World time
- World time 31 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping
- Stopwatch
- 1/100-second stopwatch Measuring capacity: 59'59.99'' Measuring modes: Elapsed time, lap time, split time
- Timer
- 2 countdown timers Can be used during interval training that alternates between two different paces. Measuring unit: 1 second Input range: 00'05'' to 99'55'' (1-minute increments and 5-second increments) Other: Auto-repeat (number of repeats settable from 1 to 10)
- Alarm/hourly time signal
- 5 daily alarms,Hourly time signal
- Light
- LED light Selectable illumination duration (1.5 seconds or 3 seconds), afterglow
- Light color
- LED:Amber
- Calendar
- Full auto-calendar (to year 2099)
- Mute feature
- Button operation tone on/off
- Energy saving feature
- Power Saving (display goes blank to save power when the watch is left in the dark)
- Battery display/alert
- Battery power indicator
- Run time
- Approx. battery operating time: 10 months on rechargeable battery (operation period with normal use without exposure to light after charge) 23 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
- Accuracy
- Accuracy: ±30 seconds per month
- Other features
- 12/24-hour format,Regular timekeeping: Analog: 2 hands (hour, minute (hand move every 20 seconds)) Digital: Hour, minute, second, pm, month, day, 6-language day of the week indicator (English, Portuguese, Spanish, French, German, Italian)
Checked 2026-10-02 · Regional scope: Casio international · Manufacturer specifications; individual watches may vary.
Original manufacturer wording is retained for source data without a reviewed translation.
Recorded discovery details.
Official discovery source
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Open official manufacturer page ↗Source record: sitemap-casio · Publication eligible: no.
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As an Amazon Associate I earn from qualifying purchases.
Affiliate link: WatchesAtlas may earn a commission from qualifying purchases, at no extra cost to you.
As an Amazon Associate I earn from qualifying purchases.
Affiliate link: WatchesAtlas may earn a commission from qualifying purchases, at no extra cost to you.
As an Amazon Associate I earn from qualifying purchases.
Affiliate link: WatchesAtlas may earn a commission from qualifying purchases, at no extra cost to you.
As an Amazon Associate I earn from qualifying purchases.
Affiliate link: WatchesAtlas may earn a commission from qualifying purchases, at no extra cost to you.
As an Amazon Associate I earn from qualifying purchases.
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