Well that was informative, thanks! Good to know!
Mine started beeping like crazy before but I think it was caused by a low battery. It stopped when I changed it.
A couple of things I've found on Pro Pointers:
1) They ground balance when you turn them on. If you turn them on near metal, you might discover your metal detecting ability with the pro pointer drops significantly or is non-existent. Hold it up in the air when you turn it on, listen for the beep set that indicates ground balance, then start pointing.
2) When the battery starts going low, if you leave the pro pointer "on" it'll start beeping erratically after a while. This is an indicator to me, at least, that it's about time to replace. Not right away, but close.
3) That stupid button design doesn't last. Eventually the button won't work, and you'll find yourself holding the button to get it to work. I have two pointers, they both lasted about 3 months before having this problem. Seems to come and go though... like when you first go out, the button will work for a bit, then stop after a few uses.
4) Remember the whole shaft is a detector. My son forgets this and tries to "point" to find. Start by wiping, then get specific.
5) Watch out for your own jewelry and metal on your knee pads. You'll spend several minute chasing your watch. I, uh, heard this one once... yeah.