San Martin BB GMTvsYema Navygraf Marine Nationale GMT

Owners are broadly enthusiastic about the San Martin BB GMT. One calls the design a handsome mashup of the Black Bay Pro and Explorer 2 that looks rugged yet can be dressed up, and another, after a couple of weeks of wear, says it wears much like a Tudor BB58. Praise for finishing is specific: one owner was struck by the polishing and craftsmanship straight out of the box, while another calls it a steal at €260 for a 20 ATM watch with sapphire crystal, anti-reflective coating, a Seiko GMT movement, and an on-the-fly adjustable clasp. Some owners dislike the clasp as big and clunky, and one reports that screw-down crown threads wouldn't seat and that the brand refused a return until AliExpress refunded him. A few note that later pieces are pricier and often need regulation. Overall, owners rate the San Martin BB GMT highly for its value and finishing, with build consistency and the clasp as the main reservations.

Owners widely praise the Yema Navygraf Marine Nationale GMT for its attractive 38.5mm case design, pleasing navy blue and yellow color combination, and comfortable wearability. The clean, non-clicking GMT function is noted as straightforward, and the watch is described as a functional instrument with a serious appearance. Accuracy figures vary, with one owner reporting regulation within -/+10 seconds per day, while another notes smooth and beautiful running. Concerns are raised about the branded clasp feeling flimsy and rattly, and one owner experienced an issue with the crown threading within a month. The prominent Marine Nationale logo is considered dominant by one reviewer. Overall, owners rate the Yema Navygraf Marine Nationale GMT highly for its attractive design and comfortable wearability at its price point.