Master Grand Tourbillon

ref. 1663417

This emblematic complication from Jaeger-LeCoultre beautifully demonstrates all of the watchmaking expertise of the brand. The Master Grand Tourbillon is equipped with the Jaeger-LeCoultre Cailbre 978, an automatic tourbillon with a titanium carriage and high-inertia balance.

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Focus

Pointer-type jumping date display, Master Grand Tourbillon

An ingenious patented jumping date mechanism has been developed so as not to hide the Tourbillon carriage from view. The 15th and 16th date of each month are positioned on either side of the Tourbillon carriage opening. The date can be adjusted in either direction.

Technical details

Reference:
1663417
Case material:
White Gold
Strap/bracelet:
Alligator Leather
Jaeger-LeCoultre Calibre
  • 978
Movement
  • Automatic
  • Number of pieces : 302
  • Vibrations per hour : 28800
  • Power-reserve : 48 Hours
  • Jewels : 33
  • Barrel : 1
  • Height : 7.10 mm
Functions
  • Hour - Minute
  • Tourbillon
  • Seconds
Case
  • White Gold
  • Water resistance : 5 bar
  • Diameter : 43mm
  • Thickness : 13.3mm
Dial
  • Mother-of-pearl
Hands
  • Alpha
Gem-setting
  • Diamond : ~94
  • ~8.0 carats
Strap/bracelet
  • Alligator Leather
Buckle
  • Folding Buckle 20.0 mm

Jaeger-LeCoultre Calibre 978