The Hublot Big Bang ref: 421.NL.5170.RX features a 44mm titanium case with a striking blue dial. This model, released in 2021, is powered by the automatic winding HUB 1280 movement. It includes a date function and a chronograph with a flyback feature, offering both precision and functionality. The watch is designed for those who appreciate a blend of modern materials and advanced watchmaking technology.