JLC 751

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The JLC 751 and JLC 752 are a family of double barrel chronograph watch movements from Jaeger-LeCoultre.

Launched in 2004 for the new Jaeger-LeCoultre Master Chronograph and Jaeger-LeCoultre Master Compressor Extreme World Chronograph, the JLC 751 and JLC 752 (respectively) were the first automatic chronograph movements ever produced by Jaeger-LeCoultre. It pioneered the vertical coupling system, allowing this column-wheel chronograph to be extremely precise. Calibres 751 and 752 are built into Jaeger-LeCoultre's Autotractor base, a modern and efficient platform.

Variants

The 751 is made up of 235 to 280 pieces (depending on variant), while the world timer 752 movement is made up of 279 pieces. Both run at 28,800 vph and list a power reserve of 65 hours thanks to a double barrel design. The JLC 752 shows hour, minute, and chronograph seconds coaxially, has a large date display, and a world timer dial around the peripheral. Subdials include a power reserve indicator and chronograph hour and 30-minute counters. All JLC 751 movements feature hour/minute/second hands, a small date window, and a chronograph with hour, 30-minute, and 60-second counters. Some feature an operating indicator, which moves once per minute to show that the watch is operating. The JLC 751E in the AMVOX2 models also features a unique "vertical trigger", allowing the chronograph to be stopped and started by pressing the crystal.

Movement Winding Pieces Beat Power Reserve Jewels Height (mm) Notes
751 Automatic 272 28800 65 Hours 41 5.6 operating indicator
751A/1 Automatic 277 28800 65 Hours 39 5.72
751D Automatic 272 28800 65 Hours 41 5.65 operating indicator
751E Automatic 280 28800 65 Hours 41 5.65 operating indicator and vertical-trigger chronograph
751F Automatic 277 28800 65 Hours 39 5.72
751G Automatic 235 28800 65 Hours 37 5.72
752 Automatic 279 28800 65 Hours 41 5.6 world timer
752/1 Automatic 279 28800 65 Hours 39 5.72 world timer

Applications

Jaeger-LeCoultre currently uses this calibre and its variants in a large number of watches, making it the company's most-common current chronograph movement.

External links

Manufacturer:

Jaeger-LeCoultre

Description:

Automatic movement

Functions:

Hour/minute/second hands
Small date window
Chronograph with hour, 30-minute, and 60-second counters
World timer
operating indicator
"Vertical" chronograph trigger on the crystal

Data:

H 5.60, 5.65, or 5.72 mm
37, 39, or 41 jewels
28800 A/h
Power reserve 65 hours

Production period:

2004-present