FIsher M-Scope Walk-Through Metal DetectorSingle person assembly, no tools required. Operates approximately 40 hours on rechargeable batteries, included. Universal power adaptor charger, included. Three sensor zones with LED detection indicators. Head to toe, zone specific detection. 100 Levels of sensitivity, adjustable. Environmentally sealed keypad with security access control. LED bad graph indicates target strength. Numeric keypad with illuminated LCD display. Memory features store