Abstract: An electronic device, in particular an electronic watch, including a case and an electronic system arranged within the case, the case being provided with a housing for a battery allowing supplying the electronic system with energy, wherein it includes a standalone endothermic protection module configured to be automatically triggered in the event of thermal runaway of the battery in order to absorb heat.

Abstract: An electromechanical horological movement including an analogue time display device and provided with at least one electromechanical motor, to drive at least one indicator of the analogue time display, and a generator including a rotor and associated with an oscillating mass coaxial with the time display device, this horological movement including a first wheel provided with a shaft, coaxial with said indicator, which is guided in rotation, in a main embodiment, by a fixed cylindrical tube around which is rotatably mounted at least one cannon of the time display device. The first wheel is in meshing relation with the rotor of the generator and is fixedly connected to the oscillating mass, on the side opposite the analogue time display, so that this oscillating mass can rotate the rotor of the generator via the first wheel.