how to use? 1. Put in the battery, turn on the power, the LED light of the machine will be on. 2. When approaching metal, the machine will alarm, but not continuously. 3. When the machine is stationary, moving the metal will make the machine alarm once. Key Features: Automatic adjustment...Microprocessor circuit ensures maximum sensitivity without adjustment. PRO-POINTER will not interfere with your metal detector pinpoint tip and 360 degree side scan capability in one pinpointer. The user manual provides simple hints about the exceptional pinpointing capabilities of this incredible detector. LED flashlight aids recovery in low light conditions. Includes woven belt holster...for securing the PRO-POINTER to standard size belts. Practical uses...Search walls and tight spaces for caches...Find metal pipes in walls or nails in drywall to locate studs...Check wood for nails before cutting with expensive tools. Scraper blade to screen soil during targeted recovery. Waterproof...PRO-POINTER can be washed in running water or used in the rain. Tuning: Automatic, Operating Temperature: -35F(-37C)to158F(70C) Operating Frequency: 12kHz Specifications: Proportional Audio/Vibration Pulse Control: Power Switch Dimensions: Length 23.2cm Thickness: 4cm Battery: Single 9V (Not Included ) Battery Life: Carbon: 16 Hours Alkaline: 30 Hours Rechargeable: 8 Hours Included: 1 x Handheld Metal Detector Battery Not Included PRO-POINTER can be washed in running water or used in the rain.