IWC Portuguese Tourbillon Automatic True Flywheel Mechanical Men's Watch One-to-One Engraved Perfect Tourbillon

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