Key Features Ultimate sensitivity. It detects medium sized pistol from a distance, large knife from distance, razor blades and box cutters from distance, foil wrapped drugs and tiny jewelry from a distance. Self calibrating digital microprocessor technology eliminates the need for periodic sensitivity adjustments. Rugged, high impact ABS case with reinforced coil compartment. Exceeds Mil Std 810F (drop test) Method 516.5, procedures II and IV. Large 8 scan surface for quick, thorough scanning. No tools required to change standard 9V battery (included). Optional rechargeable battery kit available. Sharp audible alarm and bright red LED indicates the detection of metal. Momentary push button helps temporarily eliminate detection of nearby ambient metal such as rebar, metal walls. Three color LED indication. Green LED indicates ON. Amber LED indicates LOW BATTERY. Red LED indicates ALARM. Operating temperatures: 35° F (37° C) to 158° F (70° C). Garrett Super Scanner V HandHeld Metal Detector is a rugged,compact handheld metal detector that has ultimate sensitivity for detecting medium sized pistols, large knives, razor blades, box cutters and foil wrapped drugs from a legitimate close distance. The Garrett Tactical Hand Held Super Scanner V gives out a sharp audible alarm and bright LED giving officers the tactical advantage while scanning and retrieving metallic items. The Garrett Metal Detector also has a self calibrating digital microprocessor technology which eliminates the need for periodic sensitivity adjustments. Weight:1KG