description Casio Edifice EFR-548D Overview
The Casio Edifice EFR-548D is a solar-powered chronograph wristwatch featuring a stainless steel case and bracelet. It includes three sub-dials for measuring elapsed time and a tachymeter bezel for calculating speed over a known distance. The watch is protected by a mineral crystal and offers standard water resistance for daily wear. It is positioned as an affordable, motorsport-inspired timepiece.
help Casio Edifice EFR-548D FAQ
Is the Casio Edifice EFR-548D solar powered?
The EFR-548D is generally a quartz chronograph powered by a replaceable battery, not a Tough Solar model. Casio's Edifice solar watches use an explicit Tough Solar designation, so the catalog description should not be treated as proof of solar charging.
What does the EFR-548D chronograph measure?
Its three sub-dials support stopwatch timing for elapsed intervals. The tachymeter scale can estimate speed over a known distance when used with the chronograph.
Is the Casio EFR-548D suitable for swimming?
Many EFR-548D variants are rated to 100 meters of water resistance, but the exact suffix and case-back marking should be checked. Water resistance does not make the chronograph buttons safe to operate underwater.
What type of crystal does the EFR-548D use?
The watch uses mineral glass, which is common in this Edifice range. Mineral glass is more impact-tolerant than sapphire in some situations but scratches more easily than sapphire.
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