IWC (Portuguese Tourbillon Series) Automatic Engraving Washing Tourbillon Movement Men's Watch

IWC (Portuguese Tourbillon Series) Style: Fully automatic true flywheel machinery. Thoroughly Material: 316 steel  Diameter: 43.5mm thick 14mm Movement model: automatic engraving washing tourbillon movement Vibration frequency: 28800 oscillations per hour Power reserve: 36 hours Glass: double-sided sapphire glass Strap: calfskin. Configurable top crocodile leather Clasp: Original folding clasp