Metal Detecting: Garrett Pro-Pointer Test (https://www.youtube.com/watch?v=S6uZ7b9325I#)
im quite keen on getting one of these i bought a eagle eye off of ebay but they only work with motion and not very acurate so i may have to save some pennys and buy one :P
A bit pricey but in my opinion well worth the money. Best probe i`ve ever used! One word of warning though, they tend to fall out the holster supplied so I bought a cheap curly coil keyring (79 pence) from a shop, cut off the metal ring and taped the cut end to the probe with waterproof tape. The clip end I attach to a belt loop and hey presto if falls out you don`t lose it! ;)
I like that keyring idea, one of the things that worries me about getting one of these is that i'll leave it next to a filled in hole and just walk off and never see it again. :D