M50 Black-Ion [44mm]

13 reviews
Our legendary M50 offers industry leading reliability, with 500M rating, scratch-proof sapphire crystal, and ultra-legible dial all in a matte black 316L stainless steel case. The M50 is trusted by military and tactical teams across North America to deliver rock-solid performance in any conditions.

Metal bracelets are delayed until early September.

Band Type: Black Hyper Rubber

Black Stainless Steel
Black Hyper Rubber
Black-ion Web Nato


  • Assembled in Canada
  • Free shipping on orders over $100
  • 2 year extendable warranty
  • Free returns
  • The dive watch used by professionals
  • Trusted by military and tactical teams across North America
  • Comes standard with virtually scratch proof sapphire crystal
  • Matte black ion-plated 316L stainless steel case with 500M of water-resistance (yes, you read that right)
  • High-accuracy long-life battery quartz movement
  • Comfortable 4 o’clock screw-down crown that reduces “wrist-bite”
  • Extremely legible dial with SuperLuminova luminous
  • Movement: Japanese, Quartz, Miyota 2S60
  • Dial Color: Black
  • Crown: Screw-down crown
  • Water Resistance (m/ft) : 500 / 1650
  • Case Material: Black-Ion Plated Stainless Steel
  • Crystal: Sapphire Only
  • Case Diameter: 44mm
  • Case Height: 14.5mm
  • Lug Width: 22mm
  • Lug-to-Lug: 52mm
M50 Black-Ion [44mm]
M50 Black-Ion [44mm]
The Dive Watch Used By Professionals

The M50 has 500M of water-resistance (yes, you read that right) and is used by various military and ERTs across North America. The M50 is made from 316L stainless steel case in matte black ion plating finish and comes standard with sapphire crystal.

M50 Black-Ion [44mm]
Ultra-Legible Dial

High-contrast, luminous dials and large, clear numbers offer exceptional legibility, day or night. Read the time at a glance, without glasses.


Customer Reviews
5.0 Based on 13 Reviews
5 ★
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Mark F.
United States
I recommend this product

Déjà vu all over again

I purchased my original M50 over a decade age and it provided me with outstanding service. When I discovered the Ion Black model I decided it was time to own another M50, it looks great and I’m looking forward to it giving me the same outstanding service as my original.

C S.

Amazing watch at its price point!

Very happy about my M50 black ion purchase, it's truly an amazing watch - the value is hard to beat, if not impossible! Nice heft/weight without feeling like a wrist-brick, good legibility to the numerals and face, very pleasing overall. Nitpicks - my wrist diameter is nearly 8 inches so the included NATO strap was too short, I had to use the factory NATO strap on the next-to-last setting, so I removed that original strap and installed a Barton canvas long-length strap and that is perfect. Also, the M50 black ion face is a bit plain - I would love the Momentum logo just under the 12 o'clock marker and all the other text below the logo. Rock that logo, Momentum! If it's as tough as it seems and the battery lasts almost 10 years, then I'd probably give it 6 out of 5 stars. Keep up the good work, Momentum.


Amazing watch

This is an amazing watch, built solid, precise, great look, comfortable. I have used it for over a year now and this is a perfect watch.


Amazing watch

This is an amazing watch, built solid, precise, great look, comfortable. I have used it for over a year now and this is a perfect watch.

Helmut K.


I have owned this M50 Ion plated for many months now. Works flawlessly as expected. I also have on original M50 in stainless. This new M50 is a definite improvement over the older ones. It has 120 click bezel, and the lume is absolutely excellent. Lasts all night. I really like the all black Bezel much better than the stainless style. It is quite tough. Had a few bumps and scrapes on the watch. Used a pencil eraser to rub the marks off. looking like new again. You cant go wrong with this watch. This is the watch I wear camping and for all outdoor activity. I don't dive anymore but I never have to worry about it being water proof. This has a real 500 Meter dive rating. A tough as nails watch for a Bargain Price. Keep up the good work Momentum.