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IWC - Portuguese Tourbillon Hand-Wound Ref. 5463

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Together with the Portuguese Chronograph Classic, IWC also presented the Portuguese Tourbillon Hand-Wound Ref. 5463, available in a white gold or red gold 43 mm case.
 
The flying tourbillon at 9 o'clock - weighting just 0.801 g - rotates once round its axis every 60 seconds so offsetting the pull of gravity on any disequi­librium in the balance wheel, which may affect the rate of the watch. 
The new front glass with arched edge makes the Portuguese Tourbillon Hand-Wound seem very flat, en­hancing its classic, balanced lines. Thickness is just 11 mm.

The dial can be slate ­coloured for the white gold version and silver­plated for the red gold one. 
The IWC­ manufactured 98900­ calibre movement, with its intricately decorated nickel­silver three­quarter bridge, is visible through the transparent sapphire­glass back. For the Portuguese Tourbillon Hand­Wound, IWC engineers have increased the balance frequency to 28,800 beats per hour, which ensures excel­lent precision. 
The Portuguese Tourbillon Hand-Wound timepieces are fitted with lea­ther straps from the House of Santoni. Every Santoni strap is lovingly finished with manual artistry to lend an exclusive patina look with individual colour shade.

Read the history of the IWC Portuguese

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