About half a can. Heated the can up first in hot water and shook it like hell. Makes a big difference to get a finer spray pattern. The good thing with this product is that even if you have an initial lumpy finish, it settles down when drying to give a nice smooth surface. It's a rubber paint so it feels somewhat different when applied but it has merged in really well with the frame color. I used about 5 coats, reapplied after 20/30 mins. Also wiped the plastics down with alcohol swabs before hand.
It's meant to be really tough but it if does need reapplying, you just peel it off and start again.