Patent ID: 8289816

Claim:
A chronograph timepiece comprising: a mechanical control unit releasing a mechanical setting of a chronograph hand in response to a start operation of an operation unit and mechanically zero-restoring and setting the chronograph hand in response to a reset operation of the operation unit; a switch unit operating in response to the operation of the operation unit; and an electrical control unit which starts a time measurement operation to electrically hand-movement-drive the chronograph hand when the switch unit is placed in a start state through the start operation of the operation unit and which electrically resets the time measurement operation when the switch unit is placed in a reset state through a reset operation of the operation unit, wherein the switch unit is placed in the start state after the mechanical control unit releases the setting of the chronograph hand in response to the start operation of the operation unit, and the electrical control unit starts the time measurement operation to electrically hand-movement-drive the chronograph hand; and the mechanical control unit mechanically zero-restores and sets the chronograph hand after the switch unit is placed in the reset state and the electrical control unit electrically resets the time measurement operation in response to the reset operation of the operation unit.