Master Compressor Chronograph Stainless Steel Bracelet

In Context

At 41.5 mm it is sized to the current mainstream: 40 mm is the median across every watch measured in this catalogue. The case back is closed, so the movement stays out of sight, and the sapphire crystal will resist everything short of deliberate abuse. 100 m is genuine swimming resistance — more than the shape of this watch suggests it would need.

The movement winds itself from the motion of your wrist. 65 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.

1758121 stands on its own in this catalogue — no other reference here shares its base number. It pairs a black sunburst dial with a stainless steel case. Beyond the time it carries a chronograph.

Mechanical automatic winding movement, 277 parts, 28,800 vibrations per hour, 65-hour power-reserve. Functions: hour, minute, small seconds, date. Chronograph: hour, minute and seconds counters.

1 other watch in the library runs the Jaeger-LeCoultre 751F.

Jaeger-LeCoultre

Master Compressor Chronograph Stainless Steel

1758421 · 41.5 mm