You can sensitize or desensitize a Pro-Pointer. To increase dpeth, slide a coin back from the tip until it stops alerting, it should almost double the depth.This is handy when you aren't getting a signal in the hole and want to know how much farther away you are from the target.
To desensitize it, hold as close to the target as you can, then turn it off and back on. This in effect ground balances the Propointer. Now it will only alert when you are right on the target. It's effective to use when you are looking for a very small target in a pile of dirt.
I've been told that sliding the coin causes the "pattern" to push outward from the tip.
Wayne