The 511.NX.1171.RX is the 45 mm titanium Classic Fusion. It shares the design of the 42 mm 542.NX.1171.RX: a relatively thin case, a bezel with six H-shaped screws, hours, minutes, seconds and date, and a rubber strap.
The larger diameter gives the watch more presence, while the titanium keeps the weight down.
Inside is the HUB1112, a self-winding calibre that Hublot builds on the basis of a bought-in movement. The watch is water-resistant to 50 metres.
For a chronograph of comparable size, the obvious choice is the 45 mm Big Bang Unico, with Hublot's in-house calibre.
On a pre-owned example we look for scratches and polishing marks on the bezel and the case flanks, because the large surfaces of a 45 mm case show wear clearly. We look at the H-screws and the crown, check the movement, the date and the timekeeping, and assess the strap separately.
We compare reference and serial number with the guarantee card. If you would like to sell a Classic Fusion yourself, our guide to selling a watch explains how it works with us.