The Replica Richard Mille RM 035 Watch includes a 48mm tonneau case built of the super light-weight metal known as magnesium-aluminum alloy and houses a skeletonized RMUL1, manual-winding movement with hrs, minutes and seconds functions. The alloy accustomed to construct the case consists of about 90%magnesium contributing to 8.9% aluminum causing this to be Richard Mille RM 35 Replica Watch very light and comfy to put on.