Source: Kickstarter campaign
This titanium case features a distinctive heat-treated finish, created by carefully heating the titanium to form a natural oxide layer on its surface.
As the light changes, the case reveals shifting tones of blue, purple, gold, and other subtle hues. Because the color develops naturally during the heating process, no two cases are exactly alike, giving each watch its own unique character.
This is not a painted finish—the coloration comes from the titanium itself, creating a striking, highly individual appearance.
01｜What Is STRATA GMT?
THE EARTH'S STRATA, THE PATH OF TIME
What Is STRATA GMT
STRATA GMT is a professional GMT tool watch designed by KRONOSTI for exploration and everyday adventure.
It combines a natural stone dial, Grade 5 titanium, an automatic mechanical GMT movement, and 300 m water resistance, bringing the natural textures formed by the Earth over millions of years into a mechanical timepiece built for exploration.
The name STRATA comes from Latin, meaning:
“Layers of the Earth.”
It represents the layers and traces of time preserved deep within the Earth, with each natural stone dial revealing unique patterns shaped by millions of years of geological transformation.
THE EARTH'S STRATA, WRITTEN BY TIME
The Earth is never truly unchanged.
Over millions of years, geological forces have continuously transformed the planet. Volcanic activity, mineral deposits, tectonic pressure, and the passage of time have shaped layers of rock, creating natural patterns that can never be replicated.
These textures preserve the geological history of the Earth.
Inspired by these natural geological layers, we bring the unique structures and textures of the Earth into the design of STRATA GMT.
Every piece of natural stone has undergone a long geological transformation, developing its own distinctive colors, textures, and mineral structures.
Through careful cutting, polishing, and craftsmanship, the hidden patterns within each stone are revealed, transforming each piece into a one-of-a-kind dial for STRATA GMT.
TIME LEAVES LAYERS
Time exists not only in the movement of watch hands, but also in the formation of the Earth itself.
A mechanical watch records:
Seconds, minutes, and hours.
While natural stone records:
Thousands, millions, and even billions of years.
STRATA GMT brings together three different expressions of time:
The natural layers preserved by the Earth
×
The precise mechanical time measured by the movement
×
The global connection of time enabled by the GMT function
Together, they create a timepiece that bridges:
Nature, Engineering, and Time.
A GMT TOOL WATCH BUILT FOR EXPLORATION
STRATA GMT is designed not around excessive decoration, but around the balance of materials, functionality, and durability.
Natural Stone Dial
Each dial features a unique natural pattern shaped by the Earth, ensuring that no two dials are exactly alike.
Grade 5 Titanium Case
Lightweight, strong, and highly corrosion-resistant, built for comfortable everyday wear and exploration.
Automatic Mechanical GMT Movement
Provides reliable mechanical timekeeping while allowing simultaneous reading of local time and a second time zone.
300 m Water Resistance
Engineered to meet the demands of a professional GMT tool watch.
Sapphire Crystal
Provides excellent scratch resistance and a clear, unobstructed view of the dial.
Swiss Super-LumiNova® BGW9
Applied to the hands, hour markers, and GMT indication, providing clear blue-glowing visibility in low-light conditions.
LIGHTWEIGHT, STRONG, CORROSION-RESISTANT — THE TITANIUM DNA OF KRONOSTI
FULL TITANIUM SYSTEM
STRATA GMT is built around a Grade 5 titanium case, with an optional Grade 5 titanium bracelet and titanium clasp for a fully integrated titanium wearing system.
From the case to the bracelet, titanium delivers an exceptional combination of strength, low weight, corrosion resistance, and long-term wearing comfort.
The titanium bracelet features a quick-release system, allowing you to switch straps easily without tools, making STRATA GMT ready for everyday wear, travel, and exploration.
MICRO-ADJUSTMENT CLASP OPTION
For greater comfort and a more precise fit, STRATA GMT offers an optional micro-adjustment clasp upgrade.
The micro-adjustment system allows fine adjustments to the bracelet length, providing a secure and comfortable fit as wrist size changes throughout the day.
GRADE 5 TITANIUM × EXPLORATION
Lightweight. Strong. Reliable.
A material engineered for demanding environments, brought together with the functionality of a professional GMT tool watch.
This is KRONOSTI’s approach to titanium engineering.
PRODUCT SPECIFICATIONS
Material: Grade 5 Titanium Diameter: 41 mm Thickness: Approx. 13.0 mm
Lug-to-Lug: Approx. 48 mm Lug Width: 22 mm
Case Back: Screw-down case back, available in two options:
Exhibition Case Back — Water Resistance: 50 m
Solid Case Back — Water Resistance: 300 m
Crown: Screw-down crown
Water Resistance: 300 m / 1,000 ft
Material:
Grade 5 Titanium Bezel
Optional Upgrade:
Bronze Bezel — Available After the Campaign
Function:
GMT Second Time Zone Tracking & Timing
Design:
STRATA GMT features a 120-click unidirectional rotating bezel, providing precise and reliable operation for both GMT tracking and timing.
The internal dual-ball bearing positioning system provides smooth, precise rotation while ensuring accurate alignment with every click.
The standard version comes with a Grade 5 titanium bezel, with an optional bronze bezel upgrade available after the campaign.
MICRO-ADJUSTMENT CLASP — +$49
Upgrade your STRATA GMT with our micro-adjustment clasp, designed for quick and precise wrist-size adjustment for a more comfortable fit.
The micro-adjustment clasp is made from 316L stainless steel, providing excellent durability and reliability for everyday wear.
Available as a +$49 upgrade after the campaign through the backer survey.
Standard Titanium Bracelet Clasp
The standard Grade 5 titanium bracelet comes with a titanium folding clasp.
Please note that the standard clasp does not include an on-the-fly micro-adjustment function. It uses traditional adjustment holes for fit adjustment.
For customers who prefer easier fine adjustment during daily wear, the Micro-Adjustment Clasp is available separately as an optional upgrade.
Grade 5 Titanium Bracelet
QUICK-RELEASE TITANIUM BRACELET — +$69
Upgrade your STRATA GMT with a lightweight titanium bracelet and titanium folding clasp.
The quick-release system allows the bracelet to be changed easily without tools, while the folding clasp provides a secure and comfortable fit for everyday wear.
Titanium Bracelet + Titanium Folding Clasp
Available as a +$69 upgrade after the campaign through the backer survey.
Approximate Weight:
Titanium Bracelet Version: Approx. 108g
Rubber Strap Version: Approx. 65g
Timeline
REWARDS
Click to view the high-resolution image.
Your STRATA GMT reward includes one of the following four natural stone dials at no additional cost:
MALACHITE • AMBER RED • TURQUOISE • LAPIS LAZULI
Choose 1 of 4 dial options.
Your preferred dial will be selected through the post-campaign survey before shipping.
ADD-ONS
12 NATURAL STONE DIAL UPGRADES
Beyond the 4 Core Dials included with your STRATA GMT reward, you can choose from 12 additional natural stone dial upgrades.
Each material has its own unique color, texture, veining, and natural character. Because different stones require different cutting methods, production processes, and material yields, upgrade pricing varies by dial.
Natural stone dial upgrades start from +$25.
Natural Meteorite Dial Upgrade: +$120.
Simply select your preferred upgrade from the Add-ons section when choosing your reward.
Every dial is made from genuine natural material, so no two dials will ever be exactly alike.
Click to view the high-resolution image.
Click to view the high-resolution image.
The two bezel options highlighted in the image are the standard bezel options included with the watch.
The other bezel colors and styles shown in the image will be available as optional upgrades for +$19 each after the campaign ends, and you’ll be able to select your preferred option in the survey.
This gives you more flexibility to match the bezel with your chosen dial.
Package Includes
1 × STRATA GMT Watch
1 × Rubber Strap
1 × Watch Packaging Box
1 × Warranty Card
1 × User Manual
The watch color selection will be available through the backer survey after the crowdfunding campaign ends.
If you would like to purchase additional watches, extra units can be added through the survey after the campaign ends.
The titanium bracelet is available as an optional upgrade. The standard reward tiers do not include the titanium bracelet.
🔥 The Beauty of Burnt Titanium 🔥
This is what happens when titanium meets flame — a natural spectrum of colors, no paint, no coating. Just pure heat and precision.
Each hue tells a story of temperature and time. From deep blues to vibrant purples and golds, this caseback becomes a canvas of controlled chaos.
No two are ever the same — just like every journey has its own colors.
Burnt Titanium Case Upgrade — $129
Upgrade your STRATA GMT with a distinctive Burnt Titanium Case, featuring unique blue, purple, and gold tones created through a specialized heat-treatment process.
Each case develops its own natural color variations, making every piece visually unique.
Please note:
This is a case finish upgrade and replaces the standard titanium case. It does not include an additional watch or extra case.
🎨 Common Titanium Oxide Colors by Temperature (Approximate Values):
Temperature (°C) Oxidation Layer Color
300°C Gold
400°C Purple
500°C Blue
600°C Green
700°C Gray or Irregular Color Patterns
📌 Note: The color order is related to the thickness of the oxide layer and is not absolutely fixed. Variations may occur under different environmental conditions, such as changes in oxygen concentration. Our watch Bands and buckles are made entirely of titanium, so they can also be heat-colored into your preferred shades.
⚠️ Tip: Always perform heat coloring in a safe and controlled environment.
NATO-style Nylon Strap
Premium Nylon Strap — $29
Add an extra premium nylon strap to your STRATA GMT. Lightweight, breathable, durable and comfortable for everyday wear.
Available in multiple colors.
This Add-on includes 1 × Nylon Strap. Please select your preferred color in the post-campaign survey.
Premium Nylon Strap with Deployant Clasp — $39
Upgrade your STRATA GMT with a comfortable and durable Premium Nylon Strap featuring a Deployant Clasp.
Grade 5 Titanium Mesh Bracelet.
Grade 5 Titanium Mesh Bracelet — $83
Upgrade your STRATA GMT with a Grade 5 Titanium Mesh Bracelet.
Lightweight, comfortable and flexible, the finely woven titanium mesh provides a distinctive look while maintaining the lightweight character of the titanium watch case.
Includes:
1 × Grade 5 Titanium Mesh Bracelet
Adjustable clasp
Designed for STRATA GMT
Add-on Price: $83
Please note: This is an additional bracelet and does not include a watch.
WORLDWIDE SHIPPING
STRATA GMT will be shipped to backers worldwide.
FLAT-RATE WORLDWIDE SHIPPING: $35 USD
To keep shipping simple and transparent for all backers, we offer a flat-rate worldwide shipping fee of $35 USD.
This fee covers international tracked shipping, protective packaging, logistics handling, and regional shipping cost differences.
Depending on the destination country or region, we will primarily use DHL and YunExpress for delivery.
Each STRATA GMT will be carefully inspected and securely packaged before shipment. Once your order has been dispatched, tracking information will be provided, allowing you to follow your delivery.
Shipping fees will be collected through the PledgeBox survey after the campaign ends.
ESTIMATED SHIPPING: OCTOBER 2027
Please note that actual delivery times may vary depending on the destination, customs clearance procedures, and logistics provider.
FREE PORTABLE WATCH CASE
Every watch comes with a complimentary portable watch case—perfect for protecting your watch at home or while traveling.
Included free with your reward. No additional purchase required.
2-YEAR INTERNATIONAL WARRANTY
Every STRATA GMT includes a 2-year international warranty from the date of delivery.
Under normal use, the warranty covers manufacturing defects related to the movement, components, and watch assembly.
Please note: The warranty does not cover accidental damage, misuse, scratches, normal wear and tear, strap wear, unauthorized modification or repair, or water damage caused by an improperly secured crown.
