This little tool is so handy, the puck allows me to clean each individual hole on the earbuds from debris and the brush helps brush it all away. The fine bristle allows you to clean and push the earbuds outside case as to keep them looking new.
I have also used the fine bristle brush to clean my glasses and use the smaller brush to keep my glasses looking new along the edges. 10 out of 10 I would recommend this.