![Sea Quartz 30 Eclipse - Solar Black-Ion [42mm]](http://momentumwatch.com/cdn/shop/files/SQ30-Eclipse-Black-Ion-bracelet.png?v=1774310198&width=1096)
![Sea Quartz 30 Eclipse - Solar Black-Ion [42mm]](http://momentumwatch.com/cdn/shop/files/Screenshot_2026-03-02_153236.jpg?v=1774310198&width=896)
![Sea Quartz 30 Eclipse - Solar Black-Ion [42mm]](http://momentumwatch.com/cdn/shop/files/Screenshot_2026-03-02_153150.jpg?v=1774310198&width=1041)
![Sea Quartz 30 Eclipse - Solar Black-Ion [42mm]](http://momentumwatch.com/cdn/shop/files/Screenshot_2026-03-02_153309.jpg?v=1774310198&width=665)
![Sea Quartz 30 Eclipse - Solar Black-Ion [42mm]](http://momentumwatch.com/cdn/shop/files/image-feature-sq30.png?v=1774310198&width=1096)
![Sea Quartz 30 Eclipse - Solar Black-Ion [42mm]](http://momentumwatch.com/cdn/shop/files/prod-2-feat.jpg?v=1774310198&width=1096)
![Sea Quartz 30 Eclipse - Solar Black-Ion [42mm]](http://momentumwatch.com/cdn/shop/files/Screenshot_2026-03-02_153212.jpg?v=1774310198&width=511)
![Sea Quartz 30 Eclipse - Solar Black-Ion [42mm]](http://momentumwatch.com/cdn/shop/files/SQ30-Eclipse-Black-Ion-Black.png?v=1774310198&width=1096)
![Sea Quartz 30 Eclipse - Solar Black-Ion [42mm]](http://momentumwatch.com/cdn/shop/files/SQ30-Eclipse-Black-Ion-Orange.png?v=1774310198&width=1096)
![Sea Quartz 30 Eclipse - Solar Black-Ion [42mm]](http://momentumwatch.com/cdn/shop/files/SQ30-Eclipse-Black-Ion-Product-one-nato.png?v=1774310198&width=1096)
Sea Quartz 30 Eclipse - Solar Black-Ion [42mm]
Select an Optional Band for Sea Quartz 30 Eclipse - Solar Black-Ion [42mm]
![Oceanflex Rubber [20mm]](http://momentumwatch.com/cdn/shop/products/ZC-20TRPBLACKFR.webp?v=1661447368&width=1096)
![Oceanflex Rubber [20mm]](http://momentumwatch.com/cdn/shop/files/Ocean_Flex_Rubber.png?v=1778542320&width=1377)
![Hyper Natural Rubber [20mm]](http://momentumwatch.com/cdn/shop/products/ZC-20RUH-BLACK-F_6429d14e-cad6-4598-9264-9fb4330963fa.jpg?v=1622750434&width=1096)
![Hyper Natural Rubber [20mm]](http://momentumwatch.com/cdn/shop/files/hyper_rubber_1.png?v=1778711075&width=1402)
![Evolution Fabric [20mm]](http://momentumwatch.com/cdn/shop/products/ZC-COR-BLUE-FRONT.jpg?v=1622750471&width=1096)
![Evolution Fabric [20mm]](http://momentumwatch.com/cdn/shop/products/ZC-20COR-KHAKI-F_2c34acf6-7617-426d-8afb-a0f6a727b5e9.jpg?v=1622750471&width=1096)
![Cloud Leather [20mm]](http://momentumwatch.com/cdn/shop/products/ZC-20CLD-BLACK-F_8258174c-10d1-4465-9f23-7847196dd8ce.jpg?v=1622750455&width=1096)
![Cloud Leather [20mm]](http://momentumwatch.com/cdn/shop/files/Copilot_20260512_164439.png?v=1778629493&width=1536)
![Goma Natural Rubber [20mm]](http://momentumwatch.com/cdn/shop/products/ZC-20GOM-BLACK-F.jpg?v=1765926608&width=1096)
![Goma Natural Rubber [20mm]](http://momentumwatch.com/cdn/shop/files/goma_rubber_copy_b.png?v=1778625089&width=1114)
![Convertible Rubber [20mm]](http://momentumwatch.com/cdn/shop/files/ZC-20CRV-GREEN.png?v=1768523077&width=1096)
![Convertible Rubber [20mm]](http://momentumwatch.com/cdn/shop/files/664cbcbe-2aa6-4a75-bdf0-7287a91ffc27.png?v=1778716076&width=1409)
![Bramante Leather [20mm]](http://momentumwatch.com/cdn/shop/files/ZC-20BRA-BROWN-F.png?v=1766607877&width=1096)
![Bramante Leather [20mm]](http://momentumwatch.com/cdn/shop/files/BCO.fa14e1d2-bf03-408a-8363-0182e22b78d2.png?v=1778625937&width=1024)
![Perforated Leather [20mm]](http://momentumwatch.com/cdn/shop/products/ZC-20PER-BROWN-F.jpg?v=1622750298&width=1096)
![Perforated Leather [20mm]](http://momentumwatch.com/cdn/shop/files/Copilot_20260514_155506.png?v=1778799330&width=1536)
![Technocarbon [20mm] Blue](http://momentumwatch.com/cdn/shop/files/ZC-20TEC-BLUE-F_f9b65f64-795d-470f-80b9-b02995f192f6.png?v=1757375425&width=1096)
![Technocarbon [20mm] Blue](http://momentumwatch.com/cdn/shop/files/Zc-20tec-blue-F-7_26dc2f8e-8d9d-46b0-87d7-63f212349f3a.png?v=1757375425&width=3024)
![Touch Leather [20mm]](http://momentumwatch.com/cdn/shop/products/ZC-20TCH-BROWN-F_0758782e-e78f-4bf7-a3f0-c424b2ff488e.jpg?v=1622750459&width=1096)
![Touch Leather [20mm]](http://momentumwatch.com/cdn/shop/files/ZC-20TCH-BROWN-BK.jpg?v=1759364698&width=1096)
![Mississippi Alligator Grain Leather [20mm]](http://momentumwatch.com/cdn/shop/files/Bands-20-Mississippi_black_silver_large_b2d0bd5c-163c-41f3-b22a-1161d58e821c.png?v=1759778404&width=1096)
![Mississippi Alligator Grain Leather [20mm]](http://momentumwatch.com/cdn/shop/files/missis.png?v=1778625682&width=1024)
Add an Optional Engraving for Sea Quartz 30 Eclipse - Solar Black-Ion [42mm]
Sea Quartz 30 Black Ion – Eclipse Edition
A Legend Reimagined with Solar Power
First released in 1977, the original Sea Quartz 30 made history as the world’s first analog quartz diver’s watch, famously worn by Tom Selleck in Magnum P.I. and trusted by divers around the globe. Now, that iconic legacy returns with the Eclipse Edition, blending vintage design with cutting-edge solar technology.
Timeless Design, Modern Power
The Eclipse Edition stays true to the original with its distinctive vintage case, compact lug-to-lug fit, sapphire crystal, and dive bezel. What’s new is under the hood: a solar-powered Japanese quartz movement (Epson VS43A) that charges in any light. No more battery changes—just reliable, maintenance-free timekeeping with quartz precision.
Built for the Deep
- Movement: Japanese Solar – Epson VS43A
- Unidirectional bezel - Keep track of time as you see fit.
- Water Resistance: 300 meters / 990 feet
- Crown: Screw-down for superior sealing
- Lume: Super-LumiNova® markers for outstanding low-light legibility
- Movement Japanese, Solar (Epson VS43A)
- Dial Color Black
- Screw-down crown
- Water Resistance 300 / 990
- SKU:
057AACCNC-AB-B-AC-B-AC-BLK-AB-AM-A-B
- Case Diameter 42mm
- Case Height 12.6mm
- Lug Width 20mm
- Lug-to-Lug 47mm
- Black-ion plated stainless steel
- Sapphire Only
Inspired by Icons
Before starting Momentum, our founder and president, Simon, owned a company called Chronosport. The original 1980s Chronosport UDT was famously worn by many special-operations military groups around the world, along with celebrities like Sylvester Stallone in Rambo III. The original Sea Quartz 30 was also famously worn by Tom Selleck in Magnum PI.
We believe in sustainability through durability. Solar-powered watches require less servicing and result in less batteries used over the product's lifespan. With solar watches, we also provide a 6-year warranty out the box, no 2-year service intervals required. The solar movement charges in any light, allowing the Eclipse to run for up to 6 months in pitch darkness.
St. Moritz Watch Corp. designs, assembles and services high quality sports watches under the MOMENTUM® brand. As life becomes more active and a more casual style becomes the norm, our straightforward designs, with outstanding waterproof performance and no-BS pricing, resonate more and more with active people everywhere.