Hublot Big Bang 821.NM.0170.RX 42 mm Skeleton Dial

The 821.NM.0170.RX preserves the Square Bang identity in a 42 mm titanium case with a black ceramic-and-titanium bezel. Its square silhouette gives the skeleton dial a different rhythm from the round Big Bang, while polished and satin surfaces keep the geometry legible. A black rubber strap and titanium deployant clasp continue the dark, technical palette. Sapphire with anti-reflective treatment protects the open display, and 100 metres of water resistance gives the watch practical breadth.

The automatic HUB1280 brings an in-house column-wheel chronograph with flyback function and date display. Its 43 jewels and 354 parts support a 72-hour power reserve, with the full rotor keeping the movement wound. The contrast between titanium and black ceramic sharpens the case architecture, while the exposed Unico mechanics make the Square Bang feel purpose-built rather than simply angular.