Originally Posted by Zerana

How do you use the radar? Can't seem to figure that item out.

Ok, I think I figured out the radar thing...probably.

So the radar is used automatically and it increases your chance of getting Strong Chance and Battle, if you want to save them until maybe you have slayer girls just click the picture of the radar on the the slot machine screen (it won't appear if you don't have any).

-EDIT-
LOL Xanthius beat me to the punch.