Hamilton

Chrono-Matic 50 Auto

Reference Number :

H51616731

Series : American Classic

Retail: $2,545

(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 TakeThis isn't your grandfather's dress watch; this is the piece he wishes he had while tearing up the track in his prime. The Chrono-Matic 50 Auto is a blast of pure, unadulterated '70s swagger brought roaring into the present. That big, unapologetic cushion case feels like it was carved from a single block of steel, ready for action. Your eyes are immediately drawn to the high-contrast dial, where those brilliant red chronograph pushers and sub-dial hands explode against the black background. It’s a functional riot of color that just works. This watch doesn’t whisper; it shouts its motorsport heritage, from the perforated leather strap that mimics vintage driving gloves to the tachymeter scale begging you to calculate your lap times. Tucked away inside is the H-31 automatic movement, a modern powerhouse with a 60-hour reserve, meaning this beast is always ready to roll, even after a weekend on the bench. It's a wearable piece of history with the heart of a contemporary champion.

DescriptionThe architecture of this timepiece is centered around a substantial cushion-shaped stainless steel case, with dimensions measuring 48mm×52mm and a total thickness of 16.05mm. Engineered for durability and clarity, the case is sealed with a sapphire crystal that incorporates an anti-reflection treatment to ensure optimal legibility of the black dial under various lighting conditions. This assembly provides water resistance rated to 10bar, which is equivalent to 100 meters or 145psi, making it suitable for surface water activities. The fixed bezel integrates a tachymeter scale for calculating speed, while the chronograph function is actuated by distinctive red pushers, complementing the overall aesthetic and functional purpose of the instrument. The design specifies a lug width of 22mm for strap integration.

Internally, the watch is powered by the Hamilton Caliber H-31, an automatic chronograph movement engineered for high performance. This mechanism affords an extended power reserve of approximately 60 hours. A key feature of the H-31 is the inclusion of a Nivachron balance spring, a modern alloy that provides superior resistance to magnetic fields, temperature variations, and shock, thereby enhancing the watch's timekeeping precision and reliability. The movement's functions include a central chronograph, a date display located at the 6 o'clock position, and the brand's signature H-pattern decoration on the oscillating bridge. The watch is secured to the wrist with a black calf leather strap, featuring a perforated racing style, which tapers to a 20mm stainless steel pin buckle.

GenderMen

SignaturesHamilton

Country of OriginSwitzerland

Case Size48 mm

MovementAutomatic

CaliberH-31

FunctionsChronograph, Hours, Minutes, Seconds, Date

Power Reserve60 Hours

Case MaterialsStainless Steel

Bezel MaterialsStainless Steel

Lug MaterialsStainless Steel

Dial ColorBlack