Omega Seamaster Diver 300M Co-Axial 41mm, specifically reference 212.30.41.20.03.001. 

Produced between roughly 2012 and 2018, this highly sought-after "SMPc" generation sits comfortably between the classic 90s aluminum-bezel models and the larger, modern 42mm laser-engraved wave dial variants. It is widely celebrated for its clean, non-wave aesthetic and highly wearable proportions.

• Case Diameter: 41 mm

• Thickness: 13.07 mm

• Lug-to-Lug Distance: 47.40 mm

• Lug Width: 20 mm

• Water Resistance: 300 meters (30 bar / 1000 feet)

• Movement: Omega Calibre 2500 (Automatic winding, Co-Axial escapement, 48-hour power reserve, Chronometer-certified)

• Total Weight: Approximately 178 grams

• Glossy Lacquered Blue Dial: Unlike the traditional wave dials, this specific generation features a smooth, deep blue polished lacquer dial. This layout gives the watch a more streamlined, elegant, and versatile look that transitions easily from a dive suit to a tuxedo.

• Ceramic Unidirectional Bezel: This model marked the introduction of a scratch-resistant blue ceramic insert, fixing the main wear-and-tear vulnerability of older aluminum bezels.

• Classic "Bond" Elements: It retains the iconic skeletonized hands, a helium escape valve at the 10 o'clock position, and the traditional 5-link stainless steel bracelet with a fold-out dive extension.