Compatible with XP1, XP2 or XP3, MP4, MP5, XP4 or any snap on massagers. This will include most brands like Eliking, Diamond, Hi-dow, Pinook and all iSmart products.Wet them from time to time to make them last longer. Never stick them together as will ruin pads. Stick them to the pad holder that comes with the units or to plastic to keep them reusable. 5 sets and 10 pads in total.