San Martian SN0138-G Automatic Dive Watch – Stainless Steel Sport Timepiece with 300M Water Resistance

The San Martian SN0138-G is a professional-grade mechanical dive watch designed for serious underwater enthusiasts and sports watch collectors. Featuring a 35–39mm round case with a 45.5mm lug-to-lug measurement, this watch offers a bold yet balanced presence on the wrist, engineered for both performance and style.

Powered by a reliable NH35 automatic mechanical movement, the SN0138-G ensures accurate timekeeping and the convenience of self-winding functionality. The numberless dial is equipped with luminous markers featuring C3 green light and BGW-X1 blue light for excellent visibility in low-light and underwater conditions. The scratch-resistant sapphire crystal with AR coating protects the dial, maintaining clarity and durability.

Built with professional diving in mind, the watch features a 120-click unidirectional bezel with a bead-blasted finish, a screw-down crown with a 3D hexagon logo, and a screw-down case back with brushed finishing. The solid 316L stainless steel bracelet with a new fly adjustable clasp ensures comfort and security during rigorous underwater activities. With a 20 Bar (200 meters) water resistance rating, the SN0138-G is suitable for diving, swimming, and other water sports.

Combining durability, functionality, and premium aesthetics, the SN0138-G is designed for sport, diving, and adventure enthusiasts seeking a professional-grade mechanical dive watch.

Inspired By

The San Martian SN0138-G is inspired by the Seiko Prospex Diver series, renowned for its robust automatic movement, professional water resistance, and high-performance diving features. By incorporating a sapphire crystal with AR coating, a luminous dial, screw-down crown, and solid stainless steel construction, the SN0138-G delivers the rugged functionality and sporty elegance of a luxury dive watch at a more accessible price point.

Specifications

• Brand: San Martian

• Model Number: SN0138-G

• Condition: New with tags

• Style: Sport / Diving

• Movement: NH35 Automatic Mechanical

• Display: Analog, Numberless Dial

• Case Diameter: 35–39 mm

• Case Thickness: 13 mm

• Case Shape: Round

• Case Material: 316L Stainless Steel

• Dial Window Material: Sapphire Crystal with AR Coating

• Bezel: 120-click Unidirectional, Bead-Blasted Process

• Band Material: 316L Solid Stainless Steel Bracelet

• Band Width: 20–24 mm

• Band Length: 7.5 inches

• Clasp Type: New Fly Adjustable Folding Clasp with Safety

• Lug to Lug: 45.5 mm

• Water Resistance: 20 Bar / 200 meters (Professional Diving)

• Features: Diver, Luminous C3 Green / BGW-X1 Blue, Screw-Down Crown, Screw-Down Case Back, AR Sapphire Crystal, Mechanical Automatic Movement

• Weight: ~147 g