Hamilton Khaki Navy: The Frogman, Scuba and Tenet's BeLOWZERO

The Hamilton Khaki Navy collection holds Hamilton's dive and naval watches, from the Frogman , which descends from watches made for US Navy combat divers in the Second World War, to the 1,000m BeLOWZERO built for Christopher Nolan's Tenet.

The US Navy and the Model 21

Hamilton's naval history began in the Second World War. Besides wristwatches, it made the Model 21 marine chronometer , the precision clock ships used for navigation, delivering roughly 8,900 to the US Navy. In 1943 the Navy's new Naval Combat Demolition Units, forerunners of today's Navy SEALs, received Hamilton waterproof watches with screw-cap crowns.

The Frogman

The 1951 film The Frogmen , about US Navy underwater demolition teams, featured Hamilton's Frogman, which was then mass-produced. The modern Khaki Navy Frogman Auto relaunched in 2022 at 46mm and in January 2023 at 41mm, with the H-10 automatic (80-hour power reserve) and 300m of water resistance; today the 46mm costs US$1,395–$1,545. In No Time to Die (2021), the henchman Primo wears a Khaki Navy Frogman — see our James Bond watches guide.

The Scuba

The Khaki Navy Scuba is the collection's entry-level diver: 40mm, H-10 automatic and 100m of water resistance, from US$975. Scuba Auto GMT models (43mm, from US$1,525) add a second time zone.

BeLOWZERO: Tenet and The Martian

The Tenet watch

For Tenet (2020), Hamilton made a custom Khaki Navy BeLOWZERO in black PVD titanium, 46mm, with red and blue seconds hands referencing the film's opposing teams; each colour was released as a limited edition of 888 pieces, in packaging designed by production designer Nathan Crowley. Matt Damon wore a BeLOWZERO in The Martian (2015).

The BeLOWZERO is Hamilton's most extreme diver: a 46mm case, 1,000m of water resistance and a helium escape valve for saturation diving. Current titanium models cost US$1,995–$2,175.

How It Compares

The Frogman competes with the Tudor Pelagos at a lower price and with Longines' HydroConquest; for an affordable dive watch, see the Orient Kamasu.

Frequently Asked Questions

What is the Hamilton Frogman?
A Khaki Navy dive watch descended from Hamilton watches made for US Navy combat divers in WWII and named after the 1951 film The Frogmen; the modern Frogman Auto has 300m water resistance and the H-10 movement.

What watch is in Tenet?
A custom Hamilton Khaki Navy BeLOWZERO in black PVD titanium, released as two limited editions of 888 pieces.

How deep can the Hamilton BeLOWZERO go?
It is rated to 1,000 metres and has a helium escape valve.

What Hamilton watch is in No Time to Die?
The henchman Primo wears a Hamilton Khaki Navy Frogman.

What watch does Matt Damon wear in The Martian?
A Hamilton Khaki Navy BeLOWZERO.

Related Reading

• Hamilton: Brand History
• Hamilton Khaki Field
• James Bond Watches: The Complete Guide