Ratio FreeDiver GMT Series Sapphire Stainless Steel Black Dial Automatic RTF051 200M Men's Watch
Mariana
We may never reach the Mariana Trench, which is the deepest, darkest place on Earth, but the Mariana watch captures its spirit. Its black dial reflects where light fades and silence grows. This watch represents staying steady between the unknown and the familiar. Like an anchor between two worlds, it helps you navigate remote places and distant time zones. For those whose adventures take them to hidden corners, whether in the world or the mind, our Mariana watch is meant to keep you connected to what matters.
SPECIFICATIONS
- Case Material: 316L Stainless Steel
- Dial Color: Black
- Glass: Sapphire Crystal with Anti-Reflective Coating
- Movement: Automatic NH34
- Power Reserve: 40 hours
- Jewels: 24 Jewels
- Vibrations: 21,600 bph
- Rotation: Unidirectional Rotating Bezel
- Bezel: Stainless Steel with Black Aluminum Inlay
- Bezel Markers: Marked with 24 Hour GMT Time
- Display: Analog
- Hands and Markers: Luminous
- Hands: GMT Hand
- Dial Features: Date Display
- Approximate Case Diameter (Without Crown): 40 mm
- Approximate Case Diameter (With Crown): 46.50 mm
- Approximate Case Thickness: 13.60 mm
- Approximate Lug Width: 20 mm
- Caseback: Stainless Steel Solid Screwed Case Back
- Crown: Engraved Stainless Steel Screw Down Crown
- Engravement: Case Back Engraved with Image of Free Diver
- Water Resistance: 200M Pressure Tested
- Bracelet: Stainless Steel
- Clasp: Fold-Over Lock and Two-Button Deployment (Diver Style)
FREE EXCHANGES & RETURNS
WARRANTY
A two-year international manufacturer warranty. Read More
SHIPPING
FREE SHIPPING is available Worldwide. All Orders are processed & dispatched within 24 to 48 Hours (excluding weekends & holidays).
Please note that some countries may apply VAT, GST, or customs duties, which are not included in our prices. For details, see our Shipping Policy here.
GOT QUESTIONS? LET'S CONNECT!
Whether you're curious or need a helping hand, we're just a click away!
Feel free to reach out at contact@ratiowatches.com or through our Contact Us page.
Your satisfaction is our priority!
IN THE PRESS
Two Time Zones, One Glance
Seamless Dual Timekeeping Embodied In A Meticulously Crafted GMT Watch, Ensuring You're Always In Sync With Just One Look.
Parallel Timekeeping
We’ve crafted the GMT hand with the wearer in mind, syncing time across zones seamlessly. The automatic Caliber NH34, a specialized Japanese movement ensures you’re always accurate, day or night.
Elegant GMT Dial
This watch includes a black dial with a black aluminum bezel, protected by a sapphire crystal with an anti-reflective coating. The bezel has 24-hour clear markers and is unidirectional with the Ratio logo at 12 o'clock, and a date window at 3 o'clock.
Specifications
Resilient 316L Design
The whole body of the watch, from the case to the crown, is made from high-grade 316L stainless steel. The watch has been pressure tested to offer water resistance up to 200 meters. It is equipped with a secure diver-style clasp for reliable wear in various environments.
Customer Reviews
The watch is even better in person than the pictures. This will be my fourth watch from Ratio. I went to a jewelers to have it sized, and the jeweler immediately commented on the quality of the watch. From finish to weight to movement, it was evident he was dealing with quality time piece. The process from purchase to transport was seamless.
As a former commercial diver and worker in the field of marine biology. These watches will be worn and enjoyed for a long time.
Dear Vincent,
Thank you so much for taking the time to share your experience with the Ratio FreeDiver GMT Series watch. We are so happy to hear that you are happy with your purchase and that it exceeded your expectations in person.
It means a lot to us that a professional like yourself has noticed and appreciated the craftsmanship. We hope this watch continues to serve you well on all your underwater adventures.
Best Regards,
Ratio Watches
Solid watch. Sturdy, accurate, stylish and doesn’t feel cheaply made. I’m happy
Saw the advertisement on instagram and decided to take a change and buy one. Extremely happy with my purchase, lume is top notch, its heavy and sturdy in the right ways, sapphire crystal, automatic, 200 m water resistant. I have more expensive watches in my collection and I can say that it feels no different to the others.The specs are great and for the price I couldn’t ask for more. I will definitely be a returning customer. Already got my eye on the next one!
Hi Carlos,
Thank you so much for sharing your thoughts with us! We're thrilled to hear that your purchase exceeded your expectations. It’s great to know that you’re happy with the quality and feel of your new watch, especially considering the collection you already own. We truly appreciate your support and can’t wait to have you back as a returning customer.
Best Regards,
Ratio Watches.
