The Omega Chronostop is a classic timepiece that has been popular with watch enthusiasts since its introduction in the 1960s. One of the most striking things about the Omega Chronostop reference 145.009 is its distinctive case shape. Rather than the traditional round or square cases of many watches, the Chronostop features a barrel-shaped case that sets it apart from other timepieces. This unusual case shape is both functional and stylish, allowing the watch to sit comfortably on the wrist while also making a bold visual statement.