![Momentum Aquamatic IV [42mm] - Black](http://momentumwatch.com/cdn/shop/files/Aqua-IV-Black-Hyper_copy_2026.png?v=1772836748&width=2048)
Aquamatic IV [42mm] - Black
$589
The black Aquamatic IV returns with a new matte-black ceramic bezel insert and a matching matte dial, and the bezel seems to shift from deep black to charcoal depending on the light. The 42 mm stainless steel case is rated to 200 m with a screw-down crown, and carries a sapphire crystal with anti-reflective coating and Swiss Super-LumiNova on dial, hands and bezel. Power comes from the Japanese Miyota 9015, a high-beat automatic with a 42-hour reserve.
About Momentum
Founded in 1980 and based in Vancouver, British Columbia, Momentum (a brand of St. Moritz Watch Corp.) carved out a niche building honest, hard-wearing sports watches for active people rather than chasing luxury status. Its watches lean on Swiss Ronda quartz and increasingly solar-powered movements, sapphire crystals, and serious water resistance (often 200-300m), wrapped in models like the long-running Sea Quartz 30, the UDT and M50 divers, and the Atlas field line. Trusted by firefighters, military divers, and other professionals, Momentum has built a loyal following as one of the most underrated value-driven North American microbrands, assembling watches by hand in Vancouver and Blaine, WA.
![Momentum Sea Quartz 30 [42mm]](/img-cache/34ea24d2b0e6bde0ecc3c451268887d7d981f768.webp)