The Basics

With its round case and straight lugs, the Rotonde de Cartier is one of the brand’s more traditional designs – while retaining many Cartier signature elements. This collection consists primarily of watches with added complications. The Rotonde Mysterious Hour builds upon Cartier’s long history of ‘mysterious’ clocks, whose hands seemingly float in thin air without any visible connection to any form of movement. Reference W1556224 has a white gold case set with 68 brilliant-cut diamonds and beaded rhodiumized 18K white gold crown set with a brilliant-cut diamond, for a total of 1.30 carats. The [white gold] dial is set with 448 brilliant-cut diamonds totaling 1.60 carats, while the folding clasp is set with 43 brilliant-cut diamonds totaling 0.42 carats.

Brand: Cartier
Family: Rotonde de Cartier
Reference: HPI00636
Name: Rotonde de Cartier Mysterious Hour White Gold / Diamond
Produced: 2015
Limited: No

Below is a detailed look at Cartier’s model HPI00636 from Rotonde de Cartier watch family, including the price, case details and movement features.

Cartier Rotonde de Cartier HPI00636

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The Details

Cartier’s Rotonde de Cartier Mysterious Hour White Gold / Diamond (HPI00636) was originally released in 2015. This watch features a hand-wound movement beating at a frequency of 28800 bph ( 4 Hz) to provide a 48-hour power reserve when fully wound.

The Case

The white gold case measures 42mm in diameter and roughly 11.6mm thick. The round case is paired with a diamond color dial with sword-shaped hands, and a none hour markers and minute track, covered by a sapphire glass. Cartier’s Rotonde de Cartier model HPI00636 is water resistant up to 30 meters (98 ft). A display caseback is over the back of the watch case.

Material: White gold
Glass: Sapphire
Back: Display
Shape: Round
Diameter: 42mm
Height: 11.6mm
Lug Width: N/Amm
W/R: 30

Case Diameter

Case Thickness

Lug Width

Water Resistance

The Movement

The Rotonde de Cartier HPI00636 movement is a powered by caliber 9981 MC made by Cartier. The 27-jewel hand-wound movement is 31.9mm in diameter. Its balance wheel oscillates at 28,800 semi-oscillations per hour or 4 Hz. This movement offers a 48-hour power reserve.

Type: Hand-Wound
Brand: Cartier
Caliber: 9981 MC
Base: N/A
Display: Analog
Diameter: 31.9mm
Jewels: 27
Reserve: 48 hours
Frequency: 28800 bph
Time: Hours, Minutes

The Price

How much does the Cartier’s Rotonde de Cartier HPI00636 cost? This watch was introduced in 2015 and has been in Cartier’s collection for around . This watch is not a limited release. As with most luxury watches, the price of depends on the availability and demand.

CURRENT PRICE: Not Available

For more information, visit Cartier online.


  • Brand: Cartier
  • Model: Rotonde de Cartier Mysterious Hour White Gold / Diamond
  • Reference Number: HPI00636
  • Limited: No

Case & Dial:

  • Material: White gold
  • Glass: Sapphire
  • Back: Display
  • Diameter: 42
  • Thickness: 11.6
  • Lug Width: N/A
  • Dial Color: Diamond
  • Indexes: None and Sword-shaped hands
  • Water Resistance: 30 meters


  • Winding: Hand-Wound
  • Brand: Cartier
  • Caliber: 9981 MC
  • Display: Analog
  • Diameter: 31.9mm
  • Jewels: 27
  • Power Reserve: 48 hours
  • Frequency: 28800 bph
  • Functions: Hours, Minutes

About Cartier

Cartier logo

Cartier was founded in Paris in 1847 by master jeweler Louis Francois Cartier. His son Alfred took over in 1874, but it would be the grandsons Louis, Pierre and Jacques lay the foundation for to building the brand into what it is today. The company would remain in hands of the family until 1972. While primarily a jewelry brand, Cartier has a rich and deep history when it comes to watches. It … introduced its ladies wristwatch well before the end of the 19th century, while the first men’s watch was designed in 1904 at the request of famous aviator Alberto Santos-Dumont. The latter would serve as the inspiration for the 1911 Santos wristwatch, one of many icons of the Parisian brand. Cartier is part of the Richemont group.

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