Jamanta White Dial No Date (Miyota 9039)

Based in Amadora near Lisbon, Prometheus built a cult following in the early microbrand era with its now-discontinued Ocean Diver series, prized for distinctive design and exceptional build quality. The brand uses 316L stainless steel, titanium, and CuSn8 bronze cases paired with dependable Asian movements from Miyota, Seiko Time Module (TMI), Seagull, Shanghai, and Hangzhou. Over the years it has released characterful divers and tool watches such as the faceted Trireme, the elegant Signatura, the vintage-inspired Sailfish, and today's high-water-resistance Jamanta line, earning coverage from outlets like Worn & Wound and aBlogtoWatch.