ProTek PT3101 – Titanium Field 3100 Series, Black Dial USMC Field Watch

The ProTek Titanium Field 3100 Series is crafted for mission-ready utility and wearability. Made from medical-grade titanium with a 40 mm case, scratch-resistant sapphire crystal with anti-reflective coating, and water resistance up to 100 meters, this model delivers rugged strength in a lightweight design. ProGlo™ T100 tritium illumination ensures continuous readability, even in complete darkness, using some of the largest tubes available for enhanced night visibility.

This PT3101 variant features a black dial paired with a brown genuine Italian waterproof leather strap and a titanium signature buckle. The contrast between the dark face and warm brown strap gives a field-watch feel that’s equally at home outdoors or dressed down.

Powered by a Japanese Citizen/Miyota Super 2035 quartz movement, with an approximate 4-year battery life, the PT3101 offers reliable and low-maintenance performance. The titanium screw-in embossed caseback, solid build, and multiple O-rings in the crown contribute to its durability. At ~48.4 g weight, ~11 mm thickness, and 20 mm lug width, it strikes a strong balance between rugged presence and everyday comfort.

SPECIFICATIONS:

• Protek Model #PT3101
• 40 mm Titanium Case with Black USMC Dial 
• Quartz Watch Movement with Tough Shock Protection and Superior Accuracy and Extended Battery Life
  
  • Miyota Super 2035 3 Hand Movement
  • 4 Year Battery Life
    
• Screw-down Titanium Caseback with United States Marine Corps Emblem Embossed
• Push-In Crown with Multiple O-rings for Water Resistance
• Nearly Scratchproof Sapphire Crystal with Antireflective Coating
• Genuine Italian Water Resistant Black Leather Strap (20mm x 18mm), with steel tube for the spring pin molded into the strap for added durability and strength
• Water Resistant to 100 Meters (10 ATM or 330 feet below sea level)
  
• ProGlo™ Swiss T100 Tritium self-powered illumination system, four times brighter than conventional Tritium watches, glows continuously for 25 years
  • Blue Tritium on Hour Markers 1, 2, 4, 5, 7, 8, 10 and 11
  • Blue Tritium on the Hour Hand
    
  • Green Tritium on Hour Markers 3, 6, and 9
    
  • Green Tritium on the Minute and Second Hands
  • Orange Tritium on the 12 o'clock Hour Marker

DIMENSIONS:

• Diameter - 40 millimeters (42 millimeters with setting crown)
• Thickness - 13 millimeters
• Lug Width - 20 millimeters