The DiaMaster Power Reserve by Rado is distinctive for the power reserve display on the dial. The case is in high-tech ceramic, which has a very high scratch resistance, five times higher than a comparable stainless steel. It is also 25% lighter than steel. The watch is fairly large at 43 mm, 12.3 mm thick, with rounded lines, a domed watchglass, and a distinctive radial guilloché dial. The case has a titanium caseback; it has a 5-bar water resistance rating.
The elements on the dial are nicely balanced and work well together, with the Rado Automatic text and the little mobile anchor logo above, a square date window, and the eight-day power reserve indicator including a red sector indicating that it’s time to put the watch on, or wind it.
ETA Powermatic self-winding movement
The movement is the self-winding ETA calibre C07.671, with 25 jewels. I think that it runs at 3 Hertz (21,600 vibrations per hour). It is 25.6 mm in diameter, and so the sapphire glass panel in the caseback creates a porthole effect. This new-generation movement is based on the ETA 2824-2, and it achieves its 80-hour power reserve through an improved, reduced-friction escapement, and a mainspring made using a new alloy that allows for a smaller central arbour and hence more room for the spring itself. Finish is basic, brushed on the bridges, with Côtes de Genève on the oscillating weight.
Price and availability
The Rado DiaMaster Power Reserve costs €2,170. Available from November 2017. See the Rado website for more information.