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The MM300 is a slightly unusual watch because it is monoblock (without a case back) – meaning that the movement is encased from the dial side – ensuring great protection and the 300m water-resistance.

The MM300 is, as they say, a ‘serious watch for serious sports’ and at a serious price. This Steeldive interpretation, while remaining true to the spirit of the original MM300, is offered with a rather more ‘frivolous’ price tag. The Steeldive MM300, a watch for those who don’t take sports too seriously. Remember: sometimes coming second is better than coming first because you’re not a show off. Or a drugs cheat.


Here are the Specs - 


Sapphire Crystal Glass
NH35 Automatic Movement
60 Click Rotational Ceramic Bezel
300m Water Resistance
Screwdown Crown
316L Stainless Steel Monoblock Case
Stainless Steel Strap with extra branded strap
Hacking Movement
C3 Luminova on the face and bezel

Lug Width - 20mm

Case Diameter - 44mm
Lug to Lug - 50mm
Case Thickness - 14mm
Weight - 170g
Hard Presentation Box and warranty card



We provide an extra rubber strap to give the watch a different look.

STEELDIVE SD1968 "MM 300 Monobloc" 300m Automatic Diver Wat

Out of Stock
  • 30 return to base warranty with Steeldive UK.

    6 month warranty with Steeldive Factory.

  • Free Recorded Delivery within UK.

    Europe delivery free

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