How to use? 1.put into battery,turn on power,machine' led light will light. 2.when close to metal.machine will give an alarm.it will continuous alarm. Key Features Automatically adjusts...Microprocessor circuitry insures maximum sensitivity with no tuning necessary. it does not interfere with your metal detector! Pinpointing Tip and 360 degree side scanning capability in one pinpointer. Owner's manual offers easy tips on special pinpointing abilities of this incredible detector. LED flashlight assists in low light condition recoveries. Woven belt holster...is included to se to standard size belts. Utility 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. Scraping blade to sift through soil during target recovery. Design features and specifications are subject to change without notice Length: 9" (22.9 cm) Thickness: 1.5" (3.8 cm) tapered to .875" (2.2 cm) Weight: 7oz. (0.2 kg) Operating Frequency -12 kHz Tuning:Automatic Operating Temperatures: -35degrees F to 158 degrees F Water and Dust: Meets IEC 60529 IP 66 standards Package List: 1 x Pinpointer Metal Detector(no battery) 1 x User Manual 1X woven belt holster 1X retail box