Case: Polished and brushed 316L stainless steel, with screw-down crown and guarded design. No helium valve due to saturation-specific tight construction. • Bezel: Unidirectional rotating with ceramic insert, inlaid numerals, and lume pip at 12 o’clock. • Dial: Deep black with polished raised indices, large lumed hands/markers (strong lume), small seconds or power reserve indicator (typically at ~9-10 o’clock), and date window. High legibility with subtle detailing. • Crystal: Thick flat sapphire (~4.5–5.3mm) with anti-reflective coating for durability and clarity. • Bracelet/Strap: Solid stainless steel bracelet (with diver extension ). Lug width 22mm. • Case Diameter: 45.7mm (without crown; ~50mm+ with crown). • Thickness: 16.6–17mm. • Lug-to-Lug: ~54–55mm. • Lug Width: 22mm. • Movement: Orient 40N5A automatic, 22 jewels, 21,600 vph (3 Hz), hacking and hand-winding capable, ~40-hour power reserve. Date and power reserve indicator. Accuracy typically +25/-15 sec/day. • Water Resistance: 300 meters / 30 bar (ISO-compliant saturation diver rating). • Crystal: Thick AR-coated flat sapphire. • Other Features: Screw-down crown and case back, strong lume, unidirectional bezel.