The Alsta Nautoscaph Bronze is a living timepiece — one that grows more personal with every wear. Built on the same DNA as the iconic Nautoscaph IV, it trades marine-grade steel for a high-grade bronze case that develops a rich, unique patina over time, making every watch truly one of a kind. With 300 meters of water resistance, a screw-down crown, sapphire crystal, and C3 Super-LumiNova illumination, it's engineered for real depth and real life.

Powered by the dependable Seiko NH35A automatic movement and paired with a handmade Italian leather strap, the Nautoscaph Bronze moves effortlessly from open water to evening out. The deep Anacapri blue dial and matching unidirectional ceramic bezel capture the spirit of the sea — bold, timeless, and unmistakably Alsta.

Whether you're a diver, a sailor, or simply someone who appreciates a timepiece that tells its own story — the Nautoscaph Bronze was made for you.

Technical Information

Movement: Seiko NH35A Automatic · Jewels: 24 · Frequency: 21,600 vph · Power Reserve: 41 hours · Accuracy: ±30 seconds/day · Anti-magnetic: ISO 764 · Shock resistant · Functions: Hours, Minutes, Seconds, Date

Case: High-grade bronze · Diameter: 40mm · Lug-to-lug: 51.3mm · Lug width: 20mm · Thickness: 16.2mm · Crown: Screw-down, high-grade bronze · Bezel: Unidirectional, steel with blue or black ceramic insert · Crystal: Scratch-resistant sapphire · Caseback: Stainless steel, engraved · Water Resistance: 999ft / 300m (30 ATM), exceeding ISO 6425 dive watch standards

Dial: White, Porcelana, and Anacapri with applied C3 Super-LumiNova indices · Hands: Tapered sword hands with C3 Super-LumiNova · Strap: Handmade Italian leather in brown, blue, and black