The Hublot Big Bang ref: 441.JX.4802.RT features a transparent sapphire case with a diameter of 42mm. This model, released in 2020, is powered by the automatic winding HUB 1280 movement. It includes a date function and a chronograph with a flyback feature. Limited to 500 pieces, this watch combines innovative design with precision engineering, making it a notable addition to any collection.