The GARRETT TACTICAL HAND-HELD METAL DETECTOR (THD) is the most rugged, compact metal detector on the market. Has a silent vibrating alarm indicator. Ultra sensitive response to metal objects. Works well for all law enforcement operations, but it is also particularly effective for use in schools, bars, clubs, and for corporate security. Built-in flashlight is ideal for law enforcement and night operations. Highly-sensitive - Powerful 4” length, 360° detection area.