Casio Collection AQ-S810W-1AVEF
A rugged analog-digital Casio on solar power - never change a battery again, with world time and 100m water resistance.

The AQ-S810W is one of those no-nonsense Casios that just do their job for years. It combines analog hands with a small digital window and runs on Tough Solar: light charges the cell, so you never replace a battery. With 100m water resistance, world time, stopwatch and alarms it's a reliable daily watch. For anyone after a low-maintenance, no-fuss watch, a strong gift around 60 euro.
Reasons to buy
- Tough Solar: light charges the cell, so never change a battery again
- Analog-digital: hands plus a digital window with date, world time and stopwatch
- 100m water resistant - swimming and showering are no problem
- Rugged, light resin design for daily wear
Watch-outs
- Resin case and band; less premium than steel or sapphire
- The digital window is small and the backlight modest
- No smartwatch features - just time, no notifications or steps
Why solar is so practical
Tough Solar means a solar cell under the dial keeps charging the built-in cell with ordinary ambient light. In practice you never worry about a dead battery or an expensive battery change - the watch keeps itself running as long as it sees light now and then.
Features and use
Besides analog time, the digital window shows date, a second time zone (world time), stopwatch, countdown and daily alarms. It's a few-button operation, no menus or app. With 100m water resistance you wear it carefree in the shower or pool.
Frequently asked questions
Will I ever replace the battery?
In normal use, no: the solar cell keeps the cell charged via ambient light. Only after many years might the rechargeable cell weaken.
Is it a smartwatch?
No. It's a classic analog-digital watch with world time, stopwatch and alarms - no notifications, heart rate or apps.
Where to buy
This product is currently unavailable at bol. We re-check daily and restore the buy link as soon as it's back in stock.
