I then switched on the second pair and then switched on the base unit; the new set paired immediately. I am not sure what I was expecting from a simple rubber bumper, but it does not fit very tight onto the earcups and tends to shift position, so it just doesnt feel that quality. I first went by peoples reviews and ordered a 1/2 size smaller and when I got them they were a 1/2 size too small. It does not charge anything in a case. I do my arms, legs, armpits, and down there. I have very sensitive acne prone skin. The medium is pretty big around the armpits but the rest fits great. Purchased this product to replace a true Oakley lens and within minutes received a headache when wearing my Oakley’s with this lens. Only downfall is they dont come in pairs. Keeps says controller has been disconnected, and when it does connect it drifts down.