BRM Bi Rotor

All in-house masterpiece from BRM!! Movement maintained by 4 shock absorbers mounted on progressive pitch conical springs BRM-isolastic system) Plates and bridges in arcap® Every part of movement assembly entirely bolted Birotor automatic mechanism with a differential developed from automobile techniques Lighter structure for movement drive Rotors mounted on double rows of ceramic bearings Rotor hubs in HR fortale Tantalum rotor bob weights Offset crown Time setting system of bipolar crowns Ergonomic horns adjustable to three positions Double crystals in curvilinear sapphire Water resistance guaranteed to 30 meters minimum Case and back in grade 2 titanium Crowns, horns, bearings, nuts, bolts and buckles in stainless steel 18/8 All boxes and papers.