Hamilton

Frogman Auto

Reference Number :

H77845330

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 TakeThis Frogman is less a watch and more a piece of sub-aquatic hardware that happens to tell time. Its hulking 46mm black PVD case doesn't just sit on the wrist; it establishes a base of operations. The design is pure function-first cool, a dark and brooding instrument that looks like it belongs on the forearm of a combat diver. That sharp burst of orange on the minute hand and the tip of the seconds hand isn't just a style choice; it's a critical point of focus, slicing through the murky depths or a dimly lit room with absolute clarity. You can almost feel the solid 'thunk' of the screw-down crown guard locking into place, a tactile confirmation that this watch is sealed tight against the elements. Powering this deep-sea beast is the H-10 automatic movement, packing a serious 80-hour power reserve. It’s a watch that’s ready to go even after being left on the sidelines for a long weekend. The rippled rubber strap feels robust and ready for anything, completing a package that is unapologetically tough, tactical, and built to perform when the pressure is on.

DescriptionThe Hamilton Khaki Navy Frogman, reference H77845330, is engineered with a substantial 46mm stainless steel case structure, which has been treated with a durable black PVD coating for enhanced resilience and a covert aesthetic. The case measures a thickness of 13.58mm, ensuring a commanding presence on the wrist. A sapphire crystal, treated with an anti-reflection coating, protects the black dial, optimizing legibility under various lighting conditions. For aquatic applications, the timepiece is rated for water resistance up to 30 bar, which is equivalent to 300 meters or 435 psi. This capability is further secured by the inclusion of a screw-down crown, a critical feature for preventing water ingress during high-pressure underwater activities. The design incorporates a 22mm lug width, dictating the interface with the strap assembly.

At its core, the watch operates on the Hamilton Caliber H-10 automatic movement. This self-winding mechanical caliber is notable for its extended 80-hour power reserve, allowing for more than three days of continuous operation without winding. The movement's reliability is enhanced by the incorporation of a Nivachron balance spring, which offers superior resistance to magnetic fields, temperature variations, and shocks, thereby improving timekeeping accuracy. The watch is affixed with a black rubber strap, strap reference H6000001231, designed for durability and comfort in wet conditions. It fastens with a stainless steel H-Buckle with a 20mm width, providing a secure fit. The overall package represents a purpose-built instrument designed for demanding environments.

GenderMen

SignaturesHamilton

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