Not all images were able to load for printing. Please close the print window and try again. The New Hamilton Khaki Field Power Reserve Mechanical 40mm
A mix of heritage styling, modern mechanics and a practical complication.
The Hamilton Khaki Field Collection is one of the cornerstones of the brand, building on the rugged simplicity and reliability of the original soldiers’ watches produced during the 20th century. Known for their straightforward functionality, earthy colours, and robust construction, Khaki Field models have long been appreciated. From hand-wound mechanical editions inspired by WWII field watches to more contemporary automatic models, the series has grown into a versatile family that merges authenticity with performance. For 2025, Hamilton introduces a new and rather significant evolution to the line, the Khaki Field Power Reserve Mechanical 40mm. It is the first Khaki Field to feature a power reserve indicator on the dial.
The new Khaki Field Power Reserve is presented in a 40mm stainless steel case, just under 12mm thick, sandblasted to reduce reflections and enhance the tool-watch character. The case is topped with a sapphire crystal with anti-reflective coating to ensure durability and legibility. Water-resistance is rated to 100m, pretty solid considering the field vocation.
Available with either a black or white dial, with the layout that feels authentic yet upgraded, the new model maintains the Khaki’s recognisable Arabic numerals, military minute track and syringe-style hands. Coated with Old Radium Super-LumiNova, the hands and markers ooze vintage charm paired with modern readability. The power reserve indicator is positioned at 9 o’clock, outlined in red with “F” for full and “E” for empty. An inscription at 6 o’clock, “Power Reserve 80 Hours,” underscores its utility.
The new Khaki Field Power Reserve is powered by the Hamilton calibre H-23, a hand-wound movement with a Nivachron hairspring, created by ETA exclusively for Hamilton. It is built on the tried-and-tested base of the ETA 2801-2 (the hand-wound version of the ETA 2824-2), which has undergone the Powermatic 80 evolution. The calibre thus offers an 80-hour power reserve, now displayed on the dial thanks to a differential mechanism, which operates via friction between its internal components. To maintain reliability under shocks and prevent desynchronisation, the calibre incorporates a slipping spring in the barrel. This not only resynchronises the display automatically during winding but also prevents overwinding by eliminating the hard stop of the crown.
The Khaki Field Power Reserve is available with two strap options for each dial colour. One can opt for a classic green NATO textile strap with brown leather loops and a pin buckle, or a three-row stainless steel bracelet with a butterfly clasp. The bracelet has an EasyClick system, allowing for tool-free strap changes.
The Hamilton Khaki Field Power Reserve Mechanical 40mm joins the permanent Khaki Field collection and is available in four references. Prices are EUR 915 on a strap and EUR 995 on a bracelet. For more details, please visit www.hamiltonwatch.com.
5 responses
white one in titanium!
Most people think 50 meters is too little for diving. May I add the original 50 fathoms was 33 meters. 100 feet. Jacques Costeu only went that deep until mixed air was available. This watch is capable of 99 percent of all human activities. Just not deep diving with mixed air supply and being sold by jewelers trying to make a bigger buck.
Cool looking addition to the Khaki Field range. Water resistance is ambiguous though – Hamilton’s specs and image of these new mechanical models’ caseback on their website state an increase to 100m from the usual 50m for their hand wound models. But, the ‘Features’ section lists water resistance as 50m, which may just be an error copied from other mechanical models, and followed by your review here.
its 100m water resistant
@Jonathan Doyle – the water-resistance is rated at 100m (verified with the brand and now corrected in the article)