Detection Sensitivity- Continuously adjustable with the help of a knob as per requirements of various applications.Diameter of Search Head- 140 mmMetal Detection Indication- A unique audio tone beep & red LED visual indication indicate presence of metallic object.Power Requirement- DC 9V BatterySize & Weight- 30mm(H) X 140mm (W) X395mm (L). 230gStandard Accessories- Battery & instruction manual