![First Production - UDT Black-Ion Baton Dial [42mm] + Free Flex Band](http://momentumwatch.com/cdn/shop/files/UDT-Studio-Final-Bracelet.png?v=1770929290&width=1096)
![First Production - UDT Black-Ion Baton Dial [42mm] + Free Flex Band](http://momentumwatch.com/cdn/shop/files/nnbnb.png?v=1782941683&width=1024)
![First Production - UDT Black-Ion Baton Dial [42mm] + Free Flex Band](http://momentumwatch.com/cdn/shop/files/nnn.png?v=1782941683&width=1122)
![First Production - UDT Black-Ion Baton Dial [42mm] + Free Flex Band](http://momentumwatch.com/cdn/shop/files/flex_bandas.png?v=1782943601&width=1122)
![First Production - UDT Black-Ion Baton Dial [42mm] + Free Flex Band](http://momentumwatch.com/cdn/shop/files/UDT-Studio-Final-1-black-hyper-rubber_1080x_5d49f3ba-a759-48b5-a1a1-efd53012722b.webp?v=1725576351&width=1080)
![First Production - UDT Black-Ion Baton Dial [42mm] + Free Flex Band](http://momentumwatch.com/cdn/shop/files/UDT-Studio-Final-1-Tropic-Red_156fde47-2347-4611-9760-11faea969e74.png?v=1775860041&width=1096)
![First Production - UDT Black-Ion Baton Dial [42mm] + Free Flex Band](http://momentumwatch.com/cdn/shop/files/nnmk.png?v=1782941683&width=1122)
![First Production - UDT Black-Ion Baton Dial [42mm] + Free Flex Band](http://momentumwatch.com/cdn/shop/files/UDT-Studio-Final-1-Tropic-Black_59934ce6-ab93-45c3-9a19-78d71e11ada4.png?v=1775860041&width=1096)
![First Production - UDT Black-Ion Baton Dial [42mm] + Free Flex Band](http://momentumwatch.com/cdn/shop/files/flex_band.png?v=1782943601&width=1402)
First Production - UDT Black-Ion Baton Dial [42mm] + Free Flex Band
Select an Optional Band for First Production - UDT Black-Ion Baton Dial [42mm] + Free Flex Band
![Caoutchouc Tropique FKM [20mm]](http://momentumwatch.com/cdn/shop/products/ZC-20TRPBLACKFR.webp?v=1661447368&width=1096)
![Caoutchouc Tropique FKM [20mm]](http://momentumwatch.com/cdn/shop/files/Ocean_Flex_Rubber.png?v=1778542320&width=1377)
![Caoutchouc hyper naturel [20 mm]](http://momentumwatch.com/cdn/shop/products/ZC-20RUH-BLACK-F_6429d14e-cad6-4598-9264-9fb4330963fa.jpg?v=1622750434&width=1096)
![Caoutchouc hyper naturel [20 mm]](http://momentumwatch.com/cdn/shop/files/hyper_rubber_1.png?v=1778711075&width=1402)
![Tissu Cordura® [20 mm]](http://momentumwatch.com/cdn/shop/products/ZC-20COR-KHAKI-F_2c34acf6-7617-426d-8afb-a0f6a727b5e9.jpg?v=1622750471&width=1096)
![Tissu Cordura® [20 mm]](http://momentumwatch.com/cdn/shop/files/1000076399.jpg?v=1782429930&width=3000)
![Cuir Nuage [20mm]](http://momentumwatch.com/cdn/shop/products/ZC-20CLD-BLACK-F_8258174c-10d1-4465-9f23-7847196dd8ce.jpg?v=1622750455&width=1096)
![Cuir Nuage [20mm]](http://momentumwatch.com/cdn/shop/files/Copilot_20260512_164439.png?v=1778629493&width=1536)
![Caoutchouc Naturel Goma [20mm]](http://momentumwatch.com/cdn/shop/products/ZC-20GOM-BLACK-F.jpg?v=1765926608&width=1096)
![Caoutchouc Naturel Goma [20mm]](http://momentumwatch.com/cdn/shop/files/goma_rubber_copy_b.png?v=1778625089&width=1114)
![Caoutchouc convertible [20mm]](http://momentumwatch.com/cdn/shop/files/convertible_rubber_blue.png?v=1780952184&width=700)
![Caoutchouc convertible [20mm]](http://momentumwatch.com/cdn/shop/files/664cbcbe-2aa6-4a75-bdf0-7287a91ffc27.png?v=1778716076&width=1409)
![Cuir Bramante [20mm]](http://momentumwatch.com/cdn/shop/files/ZC-20BRA-BROWN-F.png?v=1766607877&width=1096)
![Cuir Bramante [20mm]](http://momentumwatch.com/cdn/shop/files/BCO.fa14e1d2-bf03-408a-8363-0182e22b78d2.png?v=1778625937&width=1024)
![Cuir perforé [20 mm]](http://momentumwatch.com/cdn/shop/products/ZC-20PER-BROWN-F.jpg?v=1622750298&width=1096)
![Cuir perforé [20 mm]](http://momentumwatch.com/cdn/shop/files/Copilot_20260514_155506.png?v=1778799330&width=1536)
![Technocarbon Leather [20mm] Blue](http://momentumwatch.com/cdn/shop/files/ZC-20TEC-BLUE-F_f9b65f64-795d-470f-80b9-b02995f192f6.png?v=1757375425&width=1096)
![Technocarbon Leather [20mm] Blue](http://momentumwatch.com/cdn/shop/files/ZC-20TEC-BLUE-FEATURE-1_07e1a0fe-1c25-41fd-8838-8591abf56ad0.png?v=1757375425&width=4032)
![Cuir tactile [20 mm]](http://momentumwatch.com/cdn/shop/products/ZC-20TCH-BROWN-F_0758782e-e78f-4bf7-a3f0-c424b2ff488e.jpg?v=1622750459&width=1096)
![Cuir tactile [20 mm]](http://momentumwatch.com/cdn/shop/files/1000076227.jpg?v=1782341275&width=3000)
![Rallonge de bande [20 mm]](http://momentumwatch.com/cdn/shop/products/ZC-BAND-EXTENDER-F.jpg?v=1638831585&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)
![Flex Nylon [20mm]](http://momentumwatch.com/cdn/shop/files/ZC-20Flex_Blackpng_b4925d37-dd9a-4c2f-8002-4bf7be89b445.png?v=1783706500&width=800)
Add an Optional Engraving for First Production - UDT Black-Ion Baton Dial [42mm] + Free Flex Band
Our latest UDT production has now been updated with deeper applied luminous indexes, countdown bezel, lighter brushed aluminum hands, and a slightly more transparent solar dial for faster charging.
We still have a small number of brand-new previous-production UDT models available. These watches use the earlier painted luminous indexes and standard, polished handset, and traditional ceramic bezel, but otherwise deliver the same rugged UDT design, ana-digi functionality, updated locking pushbuttons, water resistance, sapphire crystal, and full Momentum warranty.
Limited availability. Once this previous-production batch is gone, it will not be restocked.
- Movement Japanese Analog Hybrid Custom Solar Movement
- Dial Color Black
- Screw-down Locking Push Buttons (No Crown)
- Water Resistance 200 / 660
- SKU:
063AACCBK-AB-B-BH-B-CQKA-C-C-K6
- Case Diameter 42mm
- Case Height 11.7mm
- Lug Width 20mm
- Lug-to-Lug 47mm
- Black-ion plated stainless steel
- Sapphire Only
Inspired by Action
Following in the footsteps of legendary timepieces, the new Momentum UDT embodies the spirit of adventure. Its predecessor, the original Chronosport UDT from the 1980s, rose to fame on the wrists of special-operations forces worldwide. The UDT's rugged functionality was further immortalized by Sylvester Stallone in Rambo, solidifying its reputation as a watch built for action.
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 3 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.