Brand: Casio | Model: CMK-100 Titanium Automatic Field Watch | Reference: CMK-100TD-1A | Category: Affordable Automatic / Field Watch | Release Year: 2026
Last updated: October 30, 2026
The Casio CMK-100TD-1A is Casio's first mainline automatic watch, a 38mm titanium field watch with a sapphire crystal, 100m water resistance and a matching titanium bracelet. Announced in October 2026 at $440, it brings a Japanese mechanical movement, a textured black dial and large Arabic numerals to one of the most accessible price points in mechanical watches.
What is the Casio CMK-100? It is Casio's first automatic watch in its main catalog. Until now, the brand's only mechanical watches were the Edifice EFK models. The CMK-100 launched in October 2026 as a five-piece series. The CMK-100TD-1A is the top model: a black dial on a full titanium bracelet. Design: a classic field-watch layout with large Arabic numerals at 12, 6 and 9, baton markers elsewhere, a date window at 3 o'clock, and a textured matte black dial. Luminous paint on the hands and markers glows green. The oversized knurled crown is a departure from Casio's usual low-profile crowns and adds to the tool-watch look. The only branding on the dial is the Casio logo. Build: the 38mm case is titanium with a titanium carbide coating to resist scratches, topped by a sapphire crystal. A screw-lock crown and screw-down caseback give it 100m water resistance. At 11.4mm thick and 44.7mm lug to lug, it wears compact and light. Movement: a Japanese automatic calibre with 21 jewels, hacking seconds, hand-winding and roughly 42 hours of power reserve. The lineup: CMK-100TC-1A (black, nylon strap plus extra leather strap, $320 launch price), CMK-100TL-1A (black, leather, $350), a grey nylon version ($350), a brown leather version with rose gold bezel ($375) and CMK-100TD-1A (black, titanium bracelet, $440). Why it matters: a titanium case, titanium bracelet and sapphire crystal on a mechanical watch from a major brand for under $500 is rare. It competes directly with entry automatics from Seiko, Orient and Citizen, and gives Casio fans a first mechanical option outside Edifice.
Not a limited edition and priced for volume, so don't expect secondary-market premiums. The value story is specs per dollar: a titanium case and bracelet, sapphire crystal and 100m water resistance on an automatic for $440 is hard to match from a major brand. As Casio's first mainline automatic, launch-year examples may hold some appeal for Casio collectors long term. Buyers who prefer a strap can save $120 with the $320 nylon version (CMK-100TC-1A).
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