Casio Edifice Chronograph EFB-730D-1AVUEF

This is the watch

On the black dial, the 3-6-9 structure becomes the model's primary graphic element. Three recessed sub-dials symmetrically arrange the chronograph layout, while the prominent baton indices clearly separate the regular time. The inspiration comes from classic sports cars, but the dark colour scheme evokes an instrument panel rather than a decorative accessory. Casio thus positions the variant between racing reference, everyday use, and a more formal context.

Materials & fit

With 47 mm between the outer points of the lugs, 40 mm across the round case, and 11 mm in height, the model has a relatively compact chronograph format. The case, bezel, and solid bracelet use stainless steel. Sapphire crystal forms the protective surface of the front, and a one-touch triple-fold clasp closes the link. The entire watch weighs 136 grams. The proportions gather the visual scope around the metal bracelet and the smaller case diameter instead of a heavily extended front.

Highlights

• The chronograph's stopwatch records full seconds for a maximum of 59 minutes and 59 seconds, with modes for elapsed time, split time, and first and second place.
• Power is supplied by an SR920SW battery with an estimated lifespan of approximately three years.
• The specified accuracy is ±20 seconds per month.
• The model is water-resistant to 10 ATM or 100 meters, a level specified for swimming.

Good to know

• What information is in the sub-dials? They show 24-hour time, stopwatch minutes, and stopwatch seconds.
• How is the basic time read? Hour, minute, and second are displayed with three central hands; the date is in its own window.
• What band size is specified? Casio's compatible range is 150–205 mm.
• What type of case back is used? The construction has a screw-locked case back.