The method for test the rate of an electronic watch with a time base device (1) comprises three main steps for the test on test equipment. The time base device comprises at least one watch module (2) with a resonator (3) connected to an oscillator of an electronic circuit (4), which is followed by a divider circuit, which is controlled by an inhibition circuit, and which provides a divided timing signal for a motor. In a first step, a measurement is made of the frequency of the oscillator reference signal in at least one measurement period without inhibition. A second step is provided for acquiring the current inhibition value to inhibit a certain number of clock pulses in a subsequently inhibition period and to determine the inhibition value. Finally, a third step is provided for calculating the corresponding rate frequency of the watch.

The regulating system includes a mechanical first oscillator (100) designed to regulate at least partly a train (82) of a timepiece movement (2000) driven by a drive system (81), a device (600) configured to impose a main operating mode in which the mechanical first oscillator (100) oscillates at a first predetermined frequency (f1), the control device (600) being controlled by a train (82) at least partly regulated by the first oscillator (100), and an actuator device (500) configured to command passage to an auxiliary operating mode in which the mechanical first oscillator (100) oscillates at another predetermined frequency (f2, f3) different from the first frequency (f1).

An electronically controlled mechanical timepiece includes: a mainspring; a train wheel that transmits mechanical energy of the mainspring; hands; a governor; a controller that controls the governor; a generator that converts the mechanical energy into electric energy; first and second power storage devices that stores electric energy; and a connection circuit that connects the first and second power storage devices in parallel. The connection circuit is switched to: a first state, in a first case, in which the first and second power storage devices are connected; a second state, in a second case, in which the first and second power storage devices are connected in a state in which an amount of electric charge transfer per unit time is smaller than that in the first state; and a third state, in a third case, in which the first and second power storage devices are disconnected from each other.