ProTek PT4109SFC – 4100 Series USMC Carbon Composite Aggressor Black & Gray Camo Dive Watch

Built for professionals, service members, and collectors, the ProTek PT4109SFC Aggressor Semper Fidelis Edition delivers the proven performance of the Aggressor platform with a refined, low-contrast tactical design.

Constructed on ProTek’s most aggressive dive platform, the PT4109SFC features a rugged 45 mm carbon composite case, 60-click unidirectional ratcheting dive bezel, and 300-meter water resistance, ensuring reliable performance in demanding environments. Each watch is individually tested in both air and water to meet ProTek’s professional dive standards.

This model is defined by its fully blacked-out case, bezel, and strap, paired with a distinctive black and gray digital camouflage dial inspired by modern MARPAT patterns. The darker, tonal camo creates a more subdued, urban tactical look, offering visual depth and texture while maintaining a low-visibility profile compared to brighter or traditional camo variants. Finished with USMC Semper Fidelis commemorative detailing and an embossed USMC caseback, it blends military heritage with contemporary design.

Inside, a dependable Japanese Citizen/Miyota 2035 quartz movement provides accurate timekeeping with a 4-year battery life, requiring minimal maintenance. For visibility in low-light conditions, the PT4109SFC is equipped with Swiss self-powered ProGlo™ tritium illumination, delivering continuous glow for up to 25 years without the need for external charging.

The watch is fitted with a durable 22 mm rubber strap, secured by a reinforced steel buckle and designed for long-term wear in tough conditions. Built for both field use and everyday wear, the PT4109SFC combines rugged capability, stealth styling, and distinctive camo detailing.

SPECIFICATIONS:

• Protek Model #PT4109SFC
• Superior Quartz Watch Movement with Tough Shock Protection, Superior Accuracy, and Extended Battery Life
  
  • Miyota 2035 3 Hand & Date Movement
  • 4-Year Battery Life
• 60-Click Unidirectional Ratcheting Elapsed Time Bezel, 5 Minute Interval Indices
• 45mm Carbon Composite Case and Bezel
• White, Black, & Gray MARPAT Camo Dial and Black Case
• Screw-down Caseback with United States Marine Corps Logo Embossed
• Screw-down black Crown with Double O-ring Water Resistance and Rubber Grip
• Nearly Scratchproof Sapphire Crystal with Antireflective Coating
• Diver's Rubber Strap (22mm x 20mm), with steel tube for the spring pin molded into the strap for added durability and strength
• Water Resistant to 300 Meters (all watches tested to full depth rating in both air and water)
  
• ProGlo™ T100 Swiss Tritium self-powered illumination system that glows continuously for 25 years
  • Green Tritium on Hour Markers 1 thru 11
  • Green Tritium on the Hour, Minute and Second Hands plus the Elapse Time Bezel
  • Orange Tritium on the 12 o'clock Hour Marker

DIMENSIONS:

• Diameter: 45 millimeters
• Thickness: 14.5 millimeters
• Lug Width: 22 millimeters
• Weight: 82 grams