The New Upgraded Gradient Hamilton Jazzmaster Open Heart 40mm

The Hamilton Jazzmaster Open Heart is a casual dress watch with a twist. This modern, versatile model stands out with its partially skeletonised dial offering a glimpse into its movement. O a recent visit to the brand’s headquarters in Bienne, we had the opportunity to go hands-on with the new versions of the model in three new colours, which includes rather attractive gradient dials and refreshed designs.

Starting with the case, as their name suggests, these Jazzmaster models come in a 40mm diameter with a height just above 11mm. Pretty pleasant proportions, with just the right mix of elegance and presence. The round design features a thin bezel and lugs that create an additional step where they meet the case sides. The finishing combines brushed and polished surfaces. The watch is water-resistant to 50 metres – enough, I’d say, for such a watch.

For 2022, Hamilton has introduced three new dial variations. The most noticeable are the dark blue and deep green versions, with a gradient effect that is bright in the centre and darkening towards the edges. There’s also a silvery-white version, which features blue accents on the hands and markers. The gradient dials feel rich, warm and cool, while the silver-white is more classic, yet with an unexpected twist. These still feature the signature Jazzmaster Open Heart cut-out, partially revealing the watch’s movement and its beating heart. The dial’s periphery is slightly sloping with nickeled or blue hour markers. The hands are fitted with Super-LumiNova inserts. 

Turning the watch over, the exhibition caseback allows you to discover the other side of the automatic movement inside. The self-winding Hamilton H-10 is a 25.60mm calibre based on the reliable ETA C07.111, itself based on the ubiquitous ETA 2824. Importantly, it offers a beefed-up power reserve of 80 hours. Equipped with 25 jewels, it beats at 21,600vph (3Hz), and the balance wheel is made of anti-magnetic Nivachron. The rotor has been customised with Hamilton’s “H” cut-out between the openworked sections, while the decoration of the rest of the calibre is basic, which is entirely understandable at this price level.

These new Hamilton Jazzmaster Open Heart 40mm come on either a patinated dark brown or dark blue leather strap with a pin buckle. The alternative is a 5-row steel bracelet fitted with a folding clasp released by a pair of pushers. On the wrist, this versatile 40mm watch wears quite comfy and tucks easily under the cuff. It has quite a strong presence with its quirky openworked dial, without being too flashy either. The price is set at EUR 945 on leather and EUR 995 on a bracelet which seems, as often with Hamilton, good value for the money.

For more information, please visit hamiltonwatch.com.