This model is housed in an imposing 18-carat 5N gold case measuring 44 millimetres in diameter and 17 millimetres in height. Its designers placed the tourbillon where the fourth wheel was originally positioned: at “6 o’clock”. The chronograph subdial remains at “12 o’clock”. In the retrograde date display, which stretches along a gentle arc on the left-hand side of the dial, the hand jumps back automatically to the 1st of the month after the 31st of the previous month. The IWC-manufactured 89900 calibre allows the time to be set precisely to the second with the help of the hacking tourbillon. The pallet and escape wheel are made from diamond-coated silicon. This provides an extremely hard surface with good surface slip, reducing friction and therefore wear. This reduced friction also compensates for the increased amount of power consumed by the tourbillon, allowing the original power reserve of 68 hours to be maintained. On the reverse side of this watch, which is water-resistant to 3 bar, the see-through sapphire-glass back offers a fascinating view of the sophisticated design of the 89900 calibre.
CALIBRE FAMILY 89000
The 89000-calibre family includes powerful chronograph movements with flyback function, which are used, for example, for the big digital date and month displays.
RETROGRADE DATE DISPLAY
This analogue type of display with a hand and scale gives the wearer a very special feel for the passing of time.
MOVEMENT: Automatic, self-winding
DIAL: Silver-plated dial
STRAP: Dark brown alligator leather strap by Santoni. Strap width 22 mm
WATER RESISTANT: Water resistance 3 bar
CASE DIAMETER: 44 mm
HEIGHT: 16.8 mm
CALENDAR: Hacking tourbillon mechanism. Chronograph function with hours, minutes and seconds
Orders that qualify for free shipping promotions will be shipped at no cost to you. You receive free shipping if you order this watch. Delivery time can range from 1 to 3 weeks, sometimes few days. You will receive detailed shipment information when your order is shipped. Please let us know if you have any special requirements or questions.