Hamilton

Intra-Matic Auto Chrono

Reference Number :

H38446731

Series : American Classic

Retail: $2,425

(As of: 07/2025)

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 TakeSome watches just have an attitude, and this Intra-Matic Auto Chrono is practically snarling. It's a throwback piece that's been dragged through a modern performance shop, emerging with a tough black PVD suit of armor and aggressive yellow accents that scream speed. The perforated racing strap isn't just for looks; it feels like it's begging for a drive with the windows down, your hand on the wheel. You can almost hear the engine rumble when you engage the crisp chronograph pushers. Inside, the H-31 movement is a true workhorse, packing a hefty 60-hour power reserve so it's ready to go even after a weekend on the nightstand. It’s the perfect co-pilot: vintage soul, contemporary guts, and a design that's pure, unapologetic motorsport cool. This isn't just a watch for telling time; it's a watch that makes you want to go out and make some time worth timing.

DescriptionThe timepiece is constructed around a 40mm stainless steel case, finished with a resilient black PVD coating for enhanced durability and a stealth aesthetic. Its total thickness measures 14.45mm. Protecting the dial is a scratch-resistant sapphire crystal that features an anti-reflective treatment to ensure maximum legibility under various lighting conditions. Water integrity is rated to 10 bar, equivalent to 100 meters or 328 feet, a rating supported by the inclusion of a screw-down crown for superior sealing. The black dial is appointed with chronograph sub-dials, a date aperture, and hands and markers treated with Super-LumiNova for visibility in low-light environments. A fixed tachymeter scale is integrated onto the bezel, allowing for the calculation of speed over a fixed distance.

Powering the watch is the Hamilton Caliber H-31, an automatic chronograph mechanism. This advanced movement provides an extended power reserve of 60 hours, a significant increase over standard chronograph calibers. It incorporates a Nivachron balance spring, a state-of-the-art alloy that offers superior resistance to magnetic fields, temperature fluctuations, and shock, thereby enhancing the watch's chronometric stability and reliability. The movement's architecture, including an H-pattern signature on the oscillating bridge, is a hallmark of its specific caliber. The watch is secured to the wrist by a calf leather strap, identified by reference H6000002121, which features a 20mm lug width and tapers to an 18mm pin buckle. For user convenience, the strap is equipped with an Easy Click system, facilitating swift changes without the need for tools.

GenderMen

SignaturesHamilton

Country of OriginUnited States

Case Size40 mm

MovementAutomatic

CaliberH-31

FunctionsChronograph, Hours, Minutes, Seconds, Date

Power Reserve60 Hours

Case MaterialsStainless Steel, PVD

Bezel MaterialsStainless Steel, PVD

Lug MaterialsStainless Steel, PVD

CrownScrew Down