Push button for use within a timepiece

A push button comprising:

• a module comprising a fixed contact part;
• an operation receiving member comprising one end configured to be moved;
• and
• a dynamic contact member comprising:
• a base part fixed to the module;
• a first movable arm having a first end connected to the base part and a second end supported by the first end of the first movable arm in a cantilever state,
• wherein the first movable arm comprises an action portion arranged closer to the second end of the first movable arm than the first end of the first movable arm, and
• wherein the action portion is arranged relative to the operation receiving member to receive a force from the one end of the operation receiving member to elastically deform the first movable arm that is connected to the base part in the cantilever state;
• and
• a second movable arm having a connected end connected to the first movable arm and a free end that does not contact the first movable arm,
• wherein the second movable arm comprises a movable contact part arranged closer to the free end of the second movable arm than the connected end of the second movable arm,
• wherein a portion of the second movable arm having the free end and the movable contact part curves more towards the module than the first movable arm, and
• wherein the second movable arm is configured to be moved by elastic deformation of the first movable arm to bring the movable contact part into electrical contact which is electrically contactable with the fixed contact part of the module.