The optoelectronic device includes a photo diode and an amplifier, which amplifies output of the photo diode. In a first time interval, a memory is used to store either the first or the second set of audio data. Each of the quartz wave plates is made of two elementary quartz plates. The terminals of the LED are arranged to extend into the bottom portion and positioned against the partition board of the bottom portion. The two contact bands are separated so as to expose a portion of the electrode coil to enable electrical stimulation of tissue of the animal.