![Sea Auto 30 [42mm] Black](http://momentumwatch.com/cdn/shop/files/1m-DN38Bs0-on-steel-bracelet.png?v=1724698795&width=1096)
![Sea Auto 30 [42mm] Black](http://momentumwatch.com/cdn/shop/files/1M-DN38Bs10-on-orange-Tropic.png?v=1724698801&width=1096)
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Sea Auto 30 [42mm] Black
Before starting Momentum, our founder Simon and his family owned a watch company called Chronosport. In 1977, they launched one of the first-ever analog quartz diver’s watches, the Sea Quartz 30. The brand became so popular that it was soon sold in almost every serious dive store in the US and Canada. This watch was also famously worn by Tom Selleck in the first 3 seasons of the hit show Magnum PI.
Many customers have asked us whether we could make the original design with the steel case and add an automatic movement option. You asked. We listened.
Interested in the original Sea Quartz 30 design with the classic (battery-powered) Swiss-made quartz movement? Click HERE.
Select an Optional Band for Sea Auto 30 [42mm] Black
Add an Optional Engraving for Sea Auto 30 [42mm] Black
![Sea Auto 30 [42mm] Black](http://momentumwatch.com/cdn/shop/files/1m-DN38Bs0-on-steel-bracelet.png?v=1724698795&width=1096)
SPECS
- Movement Japanese, Automatic (Miyota 9015)
- Dial Color Black
- Screw-down crown
- Water Resistance 300 / 990
DIMENSIONS
- Case Diameter 42mm
- Case Hight 12.6mm
- Lug Width 20mm
- Lug-to-Lug 47mm
MATERIAL
- Stainless Steel
- Sapphire Only
FEATURES
FEATURES
- Movement Japanese, Automatic (Miyota 9015)
- Dial Color Black
- Screw-down crown
- Water Resistance 300 / 990
- Case Diameter 42mm
- Case Hight 12.6mm
- Lug Width 20mm
- Lug-to-Lug 47mm
- Stainless Steel
- Sapphire Only

Inspired by Icons
Before founding Momentum, our founder, Simon, was at the helm of the renowned watch company, Chronosport. Their iconic UDT model gained worldwide recognition for its durability and reliability, worn by elite military units and Hollywood stars like Sylvester Stallone in Rambo III. Similarly, the Sea Quartz 30, made famous by Tom Selleck in Magnum P.I., became a symbol of timeless style.
To honor this rich heritage, we’re thrilled to introduce the Sea Auto 30. This modern reinterpretation of the original Sea Quartz 30 combines the classic design elements that captivated audiences with the advanced features of today’s watchmaking.