ProTek PT4105SFC USMC Carbon Dive Watch

A wristwatch with an analog dial housed in a lightweight yet sturdy watchcase. The design is engineered for work in water environments, making the model excellent for diving. Waterproofness at a level of 30 atmospheres (300 m) allows for safe use underwater, even at greater depths.

The watch features additional functions, such as a stopwatch and Pro-Glo T100 illumination, which enhance its range of use. It is equipped with a Japanese Citizen (Miyota) 2035 quartz movement, ensuring stable operation, high precision time measurement, and low energy consumption, resulting in a long battery life (up to 4 years) on a single battery.

The watch mechanism is enclosed in a watchcase with a diameter of 45 mm, made from a lightweight carbon composite, characterized by high damage resistance at a low weight. A screw-down crown made from 316L stainless steel equipped with a multi-ring seal system, together with a steel caseback, ensures high tightness of the construction. The entire watch achieves waterproofness at 300 meters (30 ATM), allowing for safe watch use during diving.

The model features a unidirectional rotating bezel with a 60-click mechanism, allowing for precise time measurement, even underwater. The bezel contains clear minute markings (every 10 units). The dial is protected by high-class sapphire glass with an anti-reflective coating, reducing light reflections and improving readability in various lighting conditions.

At the 12 o'clock position, a highlighted marker includes both the dial index and a reference point on the diving bezel. This solution aids in quickly setting the reference time and improves indication readability, especially in conditions of limited visibility.

The model includes a screw-down caseback made from high-grade 316L stainless steel, contributing to high tightness of the construction. Its surface is adorned with an embossed emblem of the United States Marine Corps (USMC) along with the inscription “The Proud 250 Years of Uncommon Valor”, referencing the formation's anniversary.

Timekeeping is handled by a Japanese Citizen (Miyota) 2035 quartz movement with three hands. Designed with stable operational parameters in mind, it guarantees repeatable indications and high accuracy in time measurement. The mechanism is characterized by low energy consumption, allowing for prolonged operation on a single battery - up to about 4 years.

The watch uses the Swiss tritium illumination system Pro-Glo T100, providing consistent visibility of indications for a period of up to 25 years without requiring external light charging. The light comes from hermetically sealed microtubes filled with tritium, emitting even continuous light regardless of surrounding conditions.

The system does not require prior exposure to light, thus maintaining full functionality in complete darkness as well as underwater. Its high intensity of illumination facilitates quick reading of indications, which is essential during diving, nighttime operations, and work in limited visibility.

The watch features a black rubber strap with a width of 22 mm, ending with a steel buckle. The construction is enhanced with a steel tube through which the spring bars pass, increasing durability and resistance to tearing. The strap comfortably fits the wrist, ensuring high wearing comfort and effectively preventing the watch from shifting.

• high water resistance 30 ATM / 300 m
• watchcase made of light and durable carbon composite (45 mm)
• 316L steel screw-down crown with seal system
• 316L steel screw-down caseback with USMC embossing
• unidirectional diving bezel (60 clicks)
• highlighted marker at 12 o'clock (dial + bezel)
• sapphire glass with anti-reflective coating
• Japanese Citizen (Miyota) 2035 quartz movement
• battery life up to approx. 4 years
• Pro-Glo T100 tritium lighting system (up to 25 years of operation)
• constant readability without the need for additional lighting
• high readability in darkness and underwater
• rubber strap 22 mm with steel buckle
• strap reinforcement with a steel tube for increased durability
• design adapted for work in challenging conditions