Comparing San Martin SN021-G-B3 & SN020-G4: A Detailed Wristwatch Review

Comparison of San Martin SN021-G-B3 and San Martin SN020-G4 Automatic Wristwatches


  • SN021-G-B3: Classic dive watch design with a stainless steel case and ceramic bezel.
  • SN020-G4: Modern and sleek design featuring a titanium case and sapphire crystal.


  • SN021-G-B3: Equipped with a Seiko NH35 automatic movement.
  • SN020-G4: Powered by a Swiss Sellita SW200 automatic movement.

Water Resistance

  • SN021-G-B3: Water-resistant up to 200 meters.
  • SN020-G4: Water-resistant up to 100 meters.


  • SN021-G-B3: Priced at $350.
  • SN020-G4: Priced at $450.


Both the San Martin SN021-G-B3 and SN020-G4 offer distinct features and styles that cater to different preferences. Depending on your priorities such as design, movement type, water resistance, and budget, you can choose the one that best suits your needs.

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