Instructions provided in French and very clear. Getting very simple service. Sound transmission from the computer to the speakers is via a small transmitter connecting cable to the headphone jack on the computer: The speakers are automatically set to the wavelength of the transmitter. They are independent and moved elsewhere in the room, near an electrical outlet so it does not use batteries. The remote control allows to turn them off and / or adjust the volume. I have not tested the speakers in a different room than the issuer or with batteries. The sound is good quality in terms of product and especially its cost.