Rado DiaMaster RHW1 Limited Edition

The show-stopping stand out piece in a collection of pared-down design watches, the Rado DiaMaster RHW1 mixes the Rado business of high-tech materials with the pleasure of adding something new in the world of watchmaking – this time an unusual movement for a high-tech ceramic watch.

The case material was chosen for being twice as light as standard ceramic. Si3N4 TiN is a form of high-tech ceramic composite that Rado has researched and developed in its latest quest for innovation.


Made by heating the mixed powders at 1800°C in an over pressure atmosphere of nitrogen, it is known for its superior wear resistance. The ‘old bronze’ colour gives the watch case a rugged, lived-in appearance. The choice of leather for the strap adds to the windswept and mysterious appeal of this undeniably cool and manly timepiece.

The materials may give this DiaMaster its look, but it is the movement that gives the watch its soul. As the Si3N4 TiN that is used for the RHW1 is half the weight of high-tech ceramic Rado usually uses, it was important to develop a movement that was equally light, but that suited the personality of the watch. The first stage was to remove the oscillating weight, so this had to be a hand -winding mechanical watch.

Next the plates and the bridge, which are traditionally made in brass were replaced by lightweight aluminium. Aluminium is known for its low density and, therefore, for its lightness as well as its durability. In order to make the aluminium parts even more durable, they have been anodised to increase their hardness. Anodisation changes the structure of the metal near the surface of the aluminium and also makes it easier to colour. In the case of the RHW1 the plates and bridge are black.

Aluminium movements were used in pocket watches in the late nineteenth and early twentieth centuries because of their lightness. It was this past trend and focus on lightness that inspired Rado to use such a movement – the RHW1, which is exclusive to Rado – for the first time in an extremely light and high-tech wristwatch.

As ever, the Rado designers have given this limited edition a modern twist to create a watch that oozes 21st century style.

Technical details
Model: Rado DiaMaster RHW1 Limited Edition
Ref: 510.0586.3.115

RHW1 (modified 16 ½ ETA 6497-2), aluminum, manual winding, 17 jewels, 3 hands, no date, small second, 53 hour power reserve, movement exclusive to Rado

Matt Si3N4 TiN high-tech ceramic
Pressed-on old bronze coloured PVD coated titanium case back with sapphire crystal
Si3N4 TiN high-tech ceramic crown
Curved sapphire crystal with anti-reflective coating on both sides
Special engraving on case back: LIMITED EDITION N° XXXX/2000
Water-resistant: to 10 bar (100m)
Dimensions 44.0 x 52.8 x 11.6 : (WxLxH in mm)

Black leather
1N gold coloured PVD coated stainless steel folding clasp

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