Swiss brand watch, nickel plated, dark blue dial, Jaeger LeCoultre, ATMOS, model 528-6 from 1964. The watch works very well and keeps time. In the late 1930s, Atmos watches were manufactured in the same factory in the Jura Mountains of Switzerland by highly skilled watchmakers. The Atmos watch operates on the basis of perpetual movement - it does not require manual winding. It obtains the energy necessary for operation from changes in temperature and atmospheric pressure in the environment and can operate for decades without human intervention. For a two-day operation, a temperature variation of just one degree between 15 and 30 degrees Celsius or a pressure variation of 3 mmHg is sufficient. The operating sword is continuously charged, being almost always at the maximum charge limit. It will be properly packaged, in 2 boxes (box in box) for transport.