Louis Erard, in collaboration with Vianney Halter, released two Steampunk-inspired Le Régulateur models. This particular variation, with a rhodium-plated dial base and red-gilt chapter and counter rings, is an exclusive e-boutique offering. Its three-part steel case measures 43mm in diameter and 10.95mm in thickness. The stepped bezel is adorned with 5N red gold-treated rivets. The sapphire crystal-covered dial displays minutes via a central hand. On separate sub-dials with black markings are the hours and running seconds. The Régulateur features a display case back revealing the automatic Sellita SW266-1 that powers the watch. This movement provides 38 hours of power reserve.