Calibre 101 Secrets Platinum

In Context

At 12 mm this is jewellery scale — a watch sized to be worn as an ornament rather than read across a room. The case back is closed, so the movement stays out of sight, and the sapphire crystal will resist everything short of deliberate abuse.

The movement is hand-wound, so winding it becomes part of the day rather than something the watch does for you. Its 33-hour reserve wants wearing most days; leave it off and it stops.

Q2873220 stands on its own in this catalogue — no other reference here shares its base number. It carries a white dial.

The Jaeger-LeCoultre Calibre 101 is a hand-wound mechanical movement renowned as the smallest mechanical caliber in the world. First introduced in 1929 and still in production, it measures just 14.0 × 4.8 mm with a thickness of 3.4 mm, yet comprises 98 components and 19 jewels. Its compact size allows it to be seamlessly integrated into high jewellery creations without compromising aesthetics. Calibre 101 powers hour and minute functions and operates at a frequency of 21,600 vibrations per hour (3 Hz). It provides a power reserve of approximately 33 hours. Entirely designed, produced, and assembled in-house by Jaeger-LeCoultre, it remains a hallmark of miniature horological craftsmanship.

1 other watch in the library runs the Jaeger-LeCoultre 101.

Jaeger-LeCoultre

Calibre 101 Secrets Pink Gold

Q2872201 · 12 mm