Hamilton

Frogman Auto

Reference Number :

H77855330

Series : Khaki Navy

Retail: $1,425

(As of: 06/2025)

This watch is not for sale, this page is just for reference purposes only. If you would like to purchase this watch, please contact Hamilton. If you are interested in selling this watch to us, you can contact us here.

Quick TakeCloaked entirely in a tactical, non-reflective black PVD coating, the Frogman H77855330 is pure, distilled purpose. This is a serious instrument, not a delicate accessory. Its commanding 46mm presence on the wrist is a constant reminder of its capability, a silent testament to the engineering that allows it to plunge 300 meters below the surface. The stark, high-contrast dial is a lesson in legibility, with only a piercing orange minute hand cutting through the darkness—a critical detail for tracking dive times. Inside this formidable shell beats the heart of a modern workhorse: the H-10 automatic movement. Its massive 80-hour power reserve means it's always ready for action, and the advanced Nivachron balance spring armors it against the invisible magnetic forces of our digital world. This watch doesn't just tell time; it exudes confidence and preparedness, a rugged companion built for those who push boundaries, whether in the deep ocean or the urban jungle.

DescriptionThe Hamilton Khaki Navy Frogman, reference H77855330, is constructed with a 46mm stainless steel case, which is augmented with a black PVD coating for enhanced durability and a non-reflective finish. The case has a thickness of 13.58mm and features a lug width of 22mm. Protecting the black dial is a sapphire crystal, selected for its high scratch resistance and treated with an anti-reflection coating to ensure maximum legibility in various lighting conditions. Engineered for aquatic environments, the watch guarantees water resistance up to 30 bar, which is equivalent to 300 meters or 435 psi. This level of integrity is supported by the inclusion of a screw-down crown, providing a superior seal against water and pressure ingress. The dial is equipped with indices and hands treated with Super-LumiNova for visibility in low-light settings.

Powering the timepiece is the Hamilton Caliber H-10, an automatic, self-winding three-hand movement. A key performance attribute of this caliber is its extended power reserve of 80 hours, allowing the watch to remain operational for over three days without being worn or wound. The H-10 incorporates a Nivachron balance spring, a modern alloy that offers significant resistance to magnetism, temperature fluctuations, and shock, thereby improving the watch's overall timekeeping stability and reliability. The movement features streamlined surfaces consistent with its functional application. The timepiece is fitted with a black rubber strap, reference H6000001231, that secures to the wrist with a 20mm H-Buckle, providing a robust and comfortable fit for the user.

GenderMen

SignaturesH. Moser & Cie.

Country of OriginSwitzerland

Case Size46 mm

MovementAutomatic

CaliberH-10

FunctionsHours, Minutes, Seconds

Power Reserve80 Hours

Case MaterialsStainless Steel, PVD

Bezel MaterialsStainless Steel, PVD

Lug MaterialsStainless Steel, PVD

Dial ColorBlack