In a surprising yet welcome move, Casio has unveiled its very first automatic watch under the Edifice line. The EFK-100 Automatic marks a turning point for a brand known more for digital innovation than mechanical finesse—yet what it delivers is an impressive entry-level piece that doesn’t feel like a compromise.
A mechanical debut decades in the making
Founded in 1946 and a pioneer in quartz and digital timekeeping, Casio has long been associated with innovation, reliability, and value. From the cult classic G-SHOCK to the retro charm of the F91W, the brand’s identity has been firmly anchored in the electronic sphere. But Edifice, its more automotive-inspired and analog-focused line, has slowly been shifting toward more serious horology.
With the EFK-100 Automatic, Casio finally steps into the mechanical realm, bringing a new dimension to its portfolio. Priced under $300, this launch clearly targets enthusiasts looking for an accessible mechanical watch with solid specs, good finishing, and a hint of everyday sportiness.
Under the hood: A serious spec sheet for the price
The EFK-100 features a 39mm stainless steel case, a sapphire crystal, and a 100-meter water resistance rating—checkmarks that would already place it ahead of many entry-level offerings. The case is brushed with polished chamfers, offering a contemporary feel that reflects Edifice’s signature automotive aesthetic. A screw-down crown at 3 o’clock reinforces its everyday robustness.
Inside beats the Seiko NH35 automatic movement, now a partner of Casio. It runs at 21,600 vibrations per hour (4Hz), features hacking and hand-winding, and delivers 41 hours of power reserve. It’s visible through an exhibition caseback, a nod to transparency both literal and figurative. While this caliber isn’t COSC-certified, it demonstrates a level of engineering that proves Casio isn’t entering the mechanical game with a very good basis.
Another nice touch: the bracelet is equipped with solid end links and a milled clasp, which are rarely seen at this price point. These details, often overlooked in the sub-$500 range, contribute to a sense of quality that punches above its weight.
Everyday tool, dressed with just enough flair
From a design perspective, the EFK-100 hits a sweet spot between sportiness and versatility. The dial, available in blue, silver, or green – and even a full carbon version – features a textured finish (electroformed) and bold indices that recall classic sports watches of the 1970s. A simple date window at 6 o’clock keeps things functional, while the applied markers and luminous hands ensure legibility.
This is a watch that works for the office, the weekend, or casual nights out. The styling is restrained, not flashy, which is precisely what makes it attractive. It’s a tool watch in spirit, but one that doesn’t shout.
For younger enthusiasts, this could be a perfect first automatic. For seasoned collectors, it’s a conversation starter—a mechanical Casio, finally. And for anyone in between, it’s a daily beater with solid specs and an honest price.
A welcome surprise—and hopefully just the beginning
Casio could have played it safe, but the EFK-100 Automatic proves the brand is ready to explore new territory. Rather than recycling vintage blueprints or chasing trends, Casio delivers a sincere offering built from the ground up. The design feels cohesive, the construction is serious, and the movement hints at future mechanical ambitions.
Retail pricing starts at $280 USD, and the watch is expected to be available through Casio’s online store and authorized retailers starting August 2025.
If this is Casio’s mechanical debut, we can’t wait to see the sequel. And if you’ve ever wished for a mechanical Casio, this one might just make you smile. Otherwise, you should check out what its G-SHOCK branch does best with the MTG-B4000 !
