Pyle PMD24 Handheld Stud/Metal Voltage Detector with Sensitivity Adjustment, Center Location LED and Audible Alerts Ergonomic design and fit LED and audible indicators Locates studs, live cable, and metal objects Adjustable detector sensitivity 8.78'' (L)  3.62'' (W)  1.77'' (H) Requires 1 x 9V battery (not included) Sold as : Unit Ergonomic design and fit - Requires 1 x 9V battery (not included) LED and audible indicators Locates studs, live cable, and metal objects Adjustable detector sensitivity 8.78'' (L) x 3.62'' (W) x 1.77'' (H)