The Fortis Marinemaster M-40 Rockstone Gray Bracelet is a true outdoor companion inspired by nature.

The Fortis Marinemaster combines the best quality materials, finest craftmanship and well considered details. A recycled stainless steel case encapsulates and protects the beating heart. The Gear Bezel, a proprietary bezel developed by Fortis adds a new level of grip and functionality.

The Swiss Made mechanical UW-30 movement is robust, with an antimagnetic gilt Glucydur balance wheel bringing outstanding precision. The UW-30 movement has been regulated to high precision and boasts 38 hour power reserve.

The design of the watch has all the robustness of a tool watch, with a no-nonsense 40mm case design that ensures comfort with every wear. The beautiful grey dial with lovely texture keeps things interesting to look at.

The statement Block Bracelet enhances the robust look of the Marinemaster. The fine-adjustment clasp features a slide system allowing the bracelet to fit you to perfection.

This watch also features everything you’d expect from an tool watch: sapphire crystal with anti-reflective coating, screw-down crown, screwed caseback and a solid 300m water resistance. 

• Serious Service
• Warranty
• About Fortis

• *Authorised dealer of Fortis watches
  *100% brand new and unworn
  *Complete with the beautiful box and stamped warranty booklet
  *Free worldwide shipping with DHL, FedEx and UPS
  *Tens of thousands of satisfied customers

• We're an authorised dealer of all of our brands, unless otherwise noted. In this day and age there are also many 'grey market dealers' that compromise. What are the main benefits of buying from an authorised dealer with regard to the warranty?

  5 year warranty

  We offer a 5 year warranty on all Fortis watches. This covers all mechanical malfunction arising from parts failure and/or assembly errors. Excluded are parts that by their nature may not last 5 years, like batteries and leather straps, damage/problems caused by improper use and wear and tear. We stand behind the brands that we sell and the quality that they offer.
  Some of our brands also offer an international warranty, which will also apply.

  Service and parts

  In the unfortunate event of a problem with your watch, you simply need to send it to us (or take it to another dealer if the brand offers an international warranty). We have access to the official service centers, where only original parts are used and the watchmakers are qualified and experienced with your type of watch. Not every watch movement is the same, so it's best if it's handled by people who know what they are doing.
  After your 5 year warranty has expired we are able to offer service in most cases.

• Read all about Fortis on our dedicated brand page.