The invention relates to a watch winding device, with a motor driving a winding operation, means for acoustic measurement of the oscillator of a watch in the winding position, control means analysingthe signals transmitted by the measuring means and comparing them to desired values that can be parameterized to regulate the operation of the motor by starting this motor when the operating amplitudeof the oscillator is less than a minimum value, and by stopping this motor when the working amplitude is higher than a maximum value, these acoustic measuring means are fixed in a base behind an sensing opening of the acoustic sensor means, the device includes an acoustic duct which places a receiving port, located inside a chamber for housing a watch, in communication with a transmitting port movable by the motor facing this sensing opening.