Casio has quietly added a fresh option for anyone who likes classic analog style with a practical twist: the new Casio MTP-B315 is now listed on the brand’s global website. It joins other newly surfaced models in the same family, but the MTP-B315 stands out with a slim metal case and a handy 24-hour sub-dial that makes it easier to track day and night at a glance.
The Casio MTP-B315 is a round analog watch designed with an everyday, versatile look. It comes in a silver-tone stainless steel case measuring 46.5 x 40.0 x 9.7 mm, giving it a notably slim profile for comfortable all-day wear. The dial uses a clean three-hand layout for hours, minutes, and seconds, paired with baton-style hour markers set inside a Clous de Paris ring for a more refined, textured finish.
At the 6 o’clock position, Casio adds a 24-hour sub-dial, a useful feature for anyone who prefers quick AM/PM confirmation without switching to a digital display. For durability, the watch is rated water resistant to 50 meters and includes a screw-lock case back and mineral glass, which should help it handle typical daily bumps and splashes.
Casio says the MTP-B315 should maintain accuracy within about 20 seconds per month and run for roughly three years on an SR621SW battery, keeping maintenance simple and low-cost.
Five versions are planned, giving buyers a choice between stainless steel bracelets and leather straps. Two models feature a seven-row stainless steel bracelet: the MTP-B315D-1AV with a black dial and the MTP-B315D-7AV with a light silver dial. The remaining three models come with black genuine leather straps, each offering a different dial color: the MTP-B315L-2AV in blue, the MTP-B315L-3AV in a blue-green shade, and the MTP-B315L-4AV in a maroon red.
Casio hasn’t confirmed an exact release date or pricing yet, but with the models already appearing on its international site, an official launch may not be far off. For fans of slim stainless steel watches, classic analog design, and a useful 24-hour sub-dial, the MTP-B315 lineup looks like one to watch.






