The 901 RWB STELLA contains a piece of metal from the first ever RWB Porsche: Stella Artois. Produced and designed in collaboration with founder of RWB, Akira Nakai.Diameter: 44mm (46 with body-kit)Height: 14mmModel wrist: 18 cmLimited edition No. 45 of 305  Caliber 9100 Miyota movementType Mechanical, self-winding and hand windingFrequency 28,800 VPH (4.0 hz)Power reserve +40 hoursAccuracy -10~+30 sec per dayJewels 26