Designed for your nose not your mouth 
Precision spikes for micro anchoring, not a smooth round surface area
Face to string contact is less than 1mm, where a kisser button is around a 1/4 inch
6.35 X more accurate anchor point 
4 FPS faster than a kisser button!
It's much faster on your bow, because its significantly lighter and the install location is further away from your nock point
Designed to grip the string more tightly and it does not require serving underneath it to stay in place
No tools required to install
Includes two Nose Buttons per package, one large & one small 
Weight: large 2.2 grains | small 0.9 grains