The Jaeger-LeCoultre Master Compressor Extreme World Chronograph (Ref. Q1768470) is a high-performance "tool watch" known for its oversized case and patented compressor locking system. It combines a world-time complication with a robust chronograph, designed for extreme durability and travel.

• Case Size: A substantial 46.3 mm diameter with a thickness of 16 mm.

• Μηχανισμός: Powered by the Calibre JLC 752 automatic movement, featuring 41 jewels and a 65-hour power reserve.

• Case Material: Typically features a Ατσάλι and titanium construction for strength without excessive weight.

• Water Resistance: Rated for 100 meters.

• Compressor System: Unlike standard screw-down crowns, this model uses a patented butterfly collar. A half-turn secures the crown and pushers. A white arrow indicates it is secure, while a red arrow means it is open.

• World Time Display: Features an internal rotating bezel with 24 world cities, allowing the wearer to read the time in any time zone simultaneously via the 24-hour ring.

• Quick-Release System: The case features spring-loaded lugs that allow for strap changes in seconds without tools. Many sets include both a black rubber strap and an alligator or leather strap.

• Shock Absorption: The internal movement is protected by an integrated shock-absorption system to handle rigorous activities.