The Basics

The Clé de Cartier was introduced at SIHH 2015. The case, available in a number of sizes, has a soft profile somewhere in between ’round’ and ‘cushion’. While at first glance the look is not unlike watches from the late sixties and early seventies, both details and finish are distinctively modern and Cartier. It’s name is a reference to the clever locking system of the crown – the ‘key’. Reference HPI00938 has a white gold case set with 180 baguette-cut diamonds totalling 8.70 carats and 48 scissor-cut diamonds totalling 4.45 carat. The white gold dial is set with 224 baguette-cut diamonds totalling 6.60 carats. The white gold folding buckle is set with an additional 37 baguette-cut diamonds totalling 0.85 carats.

Brand: Cartier
Family: Clé de Cartier
Reference: HPI00938
Name: Clé de Cartier 41 White Gold / Baguette
Produced: 2015
Limited: Yes, 20 units

Below is a detailed look at Cartier’s model HPI00938 from Clé de Cartier watch family, including the price, case details and movement features.

Cartier Clé de Cartier HPI00938

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The Details

Cartier’s Clé de Cartier 41 White Gold / Baguette (HPI00938) was originally released in 2015. This watch features a automatic movement beating at a frequency of 28800 bph ( 4 Hz) to provide a 42-hour power reserve when fully wound.

The Case

The white gold case measures 41mm in diameter and roughly 11.76mm thick. The cushion case is paired with a diamond color dial with -shaped hands, and a none hour markers and minute track, covered by a sapphire glass. Cartier’s Clé de Cartier model HPI00938 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: Cushion
Diameter: 41mm
Height: 11.76mm
Lug Width: N/Amm
W/R: 30

Case Diameter

Case Thickness

Lug Width

Water Resistance

The Movement

The Clé de Cartier HPI00938 movement is a powered by caliber 1847 MC made by Cartier. The 23-jewel automatic movement is 25.6mm in diameter. Its balance wheel oscillates at 28,800 semi-oscillations per hour or 4 Hz. This movement offers a 42-hour power reserve.

Type: Automatic
Brand: Cartier
Caliber: 1847 MC
Base: N/A
Display: Analog
Diameter: 25.6mm
Jewels: 23
Reserve: 42 hours
Frequency: 28800 bph
Time: Hours, Minutes, Seconds

The Price

How much does the Cartier’s Clé de Cartier HPI00938 cost? This watch was introduced in 2015 and has been in Cartier’s collection for around . This watch is a limited edition with just 20 pieces released. 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: Clé de Cartier 41 White Gold / Baguette
  • Reference Number: HPI00938
  • Limited: Yes, 20 units

Case & Dial:

  • Material: White gold
  • Glass: Sapphire
  • Back: Display
  • Diameter: 41
  • Thickness: 11.76
  • Lug Width: N/A
  • Dial Color: Diamond
  • Indexes: None and -shaped hands
  • Water Resistance: 30 meters


  • Winding: Automatic
  • Brand: Cartier
  • Caliber: 1847 MC
  • Display: Analog
  • Diameter: 25.6mm
  • Jewels: 23
  • Power Reserve: 42 hours
  • Frequency: 28800 bph
  • Functions: Hours, Minutes, Seconds

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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