15.5"(L) X 2.6"(W) X 1.25"(H) MD-3003 Comes with FREE Holster--$25 value

Pro Scan II (MD-3003B)

The presence of metal will be indicated by an audio warning tone and a red light coming on. The sensitivity is adjustable.
A .38 caliber hand gun will be detected at 7.75 inches on low sensitivity and 11 inches at optimum sensitivity.
A Pen knife will be detected at 4 inches on low sensitivity and 6 inches on optimum sensitivity.
A razor blade will be detected at 2 inches on low sensitivity and 4 inches on optimum sensitivity.

16.2"(L) X 3.25"(W) X 1.75"(H) MD-3003B Comes with FREE Holster--$20 value

The Pro-Scan II includes all the features of the Pro-Scan, PLUS:

Heavy duty construction...case is 50% thicker.
Easier switching between high or low sensitivity modes.
20% Larger scanning area.