CASIO EDIFICE EFR-526D-3AVUDF STANDARD CHRONOGRAPH MEN WATCH

What do the three sub-dials do?

All three belong to the stopwatch: one counts tenths of a second, one counts minutes and one counts seconds. That is what makes this a chronograph rather than a multi-dial watch — the sub-dials are a timing instrument, not a day and date display. It measures up to 59 minutes 59.9 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.

How does 43.8mm wear?

Comfortably, which is the appeal of this one. Chronographs tend towards the large because they need room for three counters, and plenty of them run past 50mm. This fits the same three counters into 43.8mm across and 11.6mm thick, which is an everyday proportion rather than a statement size. At 149 grams on a solid steel bracelet there is real weight to it, so it feels substantial without wearing large.

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 lists a compatible band size of 150mm to 205mm. 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.

How long does the battery last, and can I get it replaced?

Approximately two years on an SR920SW cell, keeping time to within ±20 seconds per month. Regular use of the stopwatch will shorten that. When the battery runs down, bring the watch to any City Chain outlet — having it changed by a service centre keeps the screw lock back correctly reseated, which protects the 100-metre rating.

What warranty does this watch come with?

The EFR-526D-3AVUDF comes with Casio's official 1-year warranty when purchased from City Chain Singapore, an authorised Casio retailer.