IWC Portuguese Tourbillon IW546302 Blue Dial watch, at 9 o’clock position set flying tourbillon, can offset the negative influence of gravity on the balance wheel, thus effectively offsetting the deviation of the travel rate, making the watch extremely accurate. ZF Factory perfectly re-carves the 81 parts to form a tourbillon device, which is placed at 12 o’clock position a round window like the genuine product. IWC Portuguese Tourbillon IW546302 ZF Factory Blue Dial Replica Watch. The rhodium-plated escapement wheel and the nickel-silver stationary wheel splint are all painstakingly cut by hand. Each fine part is finely polished, including a large number of polished inner corners and bevels, and the details can be comparable to the genuine product.