A golf ball having a mark with a distinct appearance unrealizable by only changing in tint. Each compartment can be opened, hermetically sealed, and then evacuated without disturbing the vacuum in the other compartment. In a first mode selected by the electronic circuit, at least two sensors are grouped such that the electronic circuit executes the same operation when a finger is placed on the crystal in a determined zone of the sensitive pad of one sensor or the other. A product discharge manifold is connected to the gas generator and to the first fluid line. A protrusion extends from a middle of the end surface of the frame for engaging in the engaging portion of the heat sink, such that the fan is fixed to the heat sink. The damping layer has first and second damping portions, which can include an adhesive or viscoelastic layer.