waste of time simply does not clean your teeth [SEP] it is important that you clean your teeth properly and this sure is not gonna help in any meaningful waythe so called wireless charging consists of a base you plug into a usb adapter not supplied which has metal contacts on the top to charge the device you stand it so that two contacts on the underside of the base make contact with two on the base it is pretty basic and falls over quite easilyonce charging is started a pretty pointless blue and white light pulses gently for several hoursafter charging is complete you can use this to clean your teeth by putting the brush in your mouth and turning it on the only problem is that it does not do a good job various presses of the one button make a blue light come on and the whole device vibrate gently this is totally insufficient to clean your teethi persevered with this for several days and my teeth felt horrible like i had not brushed then at allin summary worthless