CASIO EDIFICE EQS-940DB-1AVUDF SOLAR CHRONOGRAPH MEN WATCH

How does the solar power work — do I ever need a battery change?

The watch charges from light, through the dial, and stores that charge internally. Normal daily wear in daylight and ordinary indoor lighting keeps it topped up, so there is no routine battery replacement to budget for. Note what it is not: this is light charging, with no winding or shaking involved — wrist movement does nothing for it, unlike an automatic mechanical watch. The rechargeable cell does have a finite service life over many years, and replacing it is a service-centre job.

What happens if I leave it in a drawer?

From a full charge it runs for approximately five months before the hands stop. That figure assumes it was fully charged to begin with, and how quickly it recharges depends entirely on the light it gets — a watch worn under a long sleeve indoors charges more slowly than one that sees daylight. The dial carries a battery level indicator so you can check where it stands, and it warns you before the charge runs low. If the hands do stop, a few hours in bright light restarts it; the time will then need resetting.

What do the three inset dials do?

One shows the time on a 24-hour scale. The other two are the stopwatch — one counting minutes, one counting seconds — measuring in 1-second steps up to 29 minutes 59 seconds, with elapsed time, split time and 1st-2nd place timing for recording two finishing times. The date sits on the dial separately.

What is a screw lock back?

The case back screws onto the case rather than pressing into it, which tightens the seal against water and dust. It is worth being clear about what it is not: this is a screw lock case back, not a screw-down crown. The crown pulls out and pushes in as normal, so there is nothing to unscrew before setting the time or date.

Can I swim with it?

Yes. 100-metre (10 BAR) water resistance covers swimming, snorkelling and showering. It is not a diving watch — the rating is a laboratory pressure measurement, not a depth you should swim to, so avoid scuba diving, do not use the chronograph buttons while the watch is wet, and do not pull out the crown with water on the case.

Will the bracelet fit my wrist, and can it be adjusted?

Casio does not publish a compatible band size for this model, so we cannot quote a range. It is a solid steel bracelet, sized by removing links, which can be done in store at City Chain. It closes on a one-touch three-fold clasp, so it opens and fastens without threading a buckle. The case is a substantial 49.5 × 45.5mm at 132 grams, so it is worth trying on if you usually wear something smaller.

What warranty does this watch come with?

The EQS-940DB-1AVUDF comes with Casio's official 1-year warranty when purchased from City Chain Singapore, an authorised Casio retailer.