Reverso Gyrotourbillon 2

In Context

At 36 mm it is classically proportioned: the size a dress watch was understood to be for most of the twentieth century, and small enough to sit under a cuff. At 15.8 mm it is a tall case, and it will catch on a cuff. The sapphire crystal will resist everything short of deliberate abuse. Rated to 30 m, it is protected against rain and splashes and nothing beyond that.

The movement is hand-wound, so winding it becomes part of the day rather than something the watch does for you. 50 hours of reserve is enough to set it down on Friday evening and find it still running on Monday. At 28,800 vph the seconds hand advances 8 times a second.

2332420 stands on its own in this catalogue — no other reference here shares its base number. It pairs a skeleton dial with a pink gold case.

The spherical 'Gyrotourbillon' is one of Jaeger-LeCoultre's emblematic complications. Featuring such, caliber 174 consists of 373 parts and has a power reserve of 50 hours. Data on the tourbillon: * Outer carriage: aluminium, 60 seconds for a complete rotation * Inner carriage: titanium and aluminium, 18.75 seconds for a complete rotation * Balance: inertia of 12.5 mg x cm2 * Balance frequency: 28,800 vibrations per hour * Parts:100