H. Moser takes one of its most complicated movements and gives it a minimalist makeover. The Streamliner Perpetual Calendar Watch redesigns the Perpetual 1 to an HMC 812 caliber with a 168-hour power reserve. The brand's trademark Fumé dial features red white outer minute tracks, three-dimensional Globolight hands, and a small red and white central hand to indicate the month. A gauge at 10 o'clock displays the power, while days are positioned at 4 o'clock and is operated by a "Flash Calendar" mechanism that instantly changes the date at midnight. To maintain the watch's simplicity, the leap year indicator is placed on the movement side, visible through the sapphire case back. The watch is presented with a sleek 42.3 mm steel case with a matching bracelet, both finished alternating brushed and polished surfaces.