«1000 Hours Control» test
by Jaeger‑LeCoultre
Jaeger‑LeCoultre subjects each of its watches to the rigourous
“1000 Hours Control” test programme. Unique in its kind,
this programme consists of 1000 hours of comprehensive,
stringent checks.
The “1000 Hours Control” seal or marking affixed or
engraved on the back of your watch certifies that it has
undergone this observation programme in our laboratories
and has passed all the tests.These comprise rate regularity
checks, temperature and atmospheric pressure tests, impact
and magnetic field resistance tests, as well as water‑resistance
tests. Your watch is therefore capable of withstanding the trials
awaiting it in everyday life when you wear it on your wrist.
The criteria of the “1000 Hours Control” programme go far
beyond the official timekeeping test standards, which concern
only part of the movement. Jaeger‑LeCoultre tests not only
the movement before casing it within the watch, but also the
watch as a whole.
Technical specifications
‑ Automatic winding mechanical movement,
Calibre 975H.
‑ 28,800 vibrations/hour.
‑ Power‑reserve: approximately 48 hours.
Movement
Functions
The Master Hometime watch model features a double set
of hands which enables the local time on the main display
to be changed rapidly by moving the corresponding hand
forward or backward in 1‑hour jumps, while maintaining a
reference time by means of a second hour hand, with a 24‑
hour indicator at 12 o’clock. The watch offers the following
functions:
‑ Rapid, independent 2‑way local time adjustment (travel
time‑zone).
‑ Date synchronised with local time; 2‑way adjustment.
‑ Reference time (blue hand).
‑ 24‑hour indicator linked to the reference time.
‑ Minute and small seconds.
Given these functions, if you display a local time identical to
the reference time, the two hour hands will be superimposed.
You may use the local time and reference time displays as you
wish, for example:
‑ Indicate the same time in the local time display and
reference time display; the two hands will then be
superimposed, offering a classic display.
‑ Set a different time on the main display while keeping the
reference time on the additional hand (blue hand).
‑ Set another time‑zone on the reference time display.
‑ Indicate the official GMT time on the reference time
display, so as to deduce the time in any time‑zone based
on its difference relative to GMT time, and then display it
on the local hands.
Whichever option you choose, the local time function enables
you to move the hour hand of the main display rapidly in
1‑hour jumps, in either direction, simultaneously driving the
date.
This mechanism thus enables you to set a different time in
a few steps, without losing the accuracy of the minute and
seconds hands. It is very useful when travelling in order to
display the time in the relevant time‑zone, while keeping the
time in the country of origin on the secondary reference
displays.
On returning from your trip, you can restore your home time
to the main display just as quickly.
Jaeger‑LeCoultre Calibre 975H.
To Next Page
Loading...
Need help?
General
