btw, I see that the url is all messed up, sorry about that. Here is what it says:

Craftsman Stud Finder, Deep Read
Detects/differentiates wood, metal & live wire simultaneously through drywall, tile, plaster & other common wall materials. Easy-to-read LCD display for visual & audio detection of stud positions.

Automatic calibration in both standard and Deep Read mode
Heavy duty ABS construction for durability
Locates wood studs & live AC wires in both standard (3/4 in.) & deep read modes (1-1/2 in.
Pencil line to easily note location of stud edges
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