Watch comprising an optical filtering element

A watch comprising:

• a bracelet;
• a watch case including at least one electrical or electronic component;
• at least one Dewar device configured to enclose said at least one electrical or electronic components, and comprising inner and outer walls and a vacuum or quasi-vacuum space defined between the inner and outer walls, the inner wall delimiting a volume in which said at least one electrical or electronic component is arranged;
• and
• an optical filtering element defined in only a part of a visible outer face of said case, said filtering element being capable of transmitting only the visible electromagnetic spectrum,
• wherein the Dewar device comprises two thin inner and outer walls, the inner wall nested inside the outer wall, the inner wall delimiting the volume inside which the or each electrical or electronic component is arranged, the outer wall which is arranged on the outer side of the watch, the vacuum or quasi-vacuum space separating the inner wall from the outer wall.