Professional Security Metal Scanner,Handheld Metal Detector Wand For 1:[Easy Operation] The product is easy to operate and does not require professional technical support. Simply turn on the switch, and it is ready to use. 2:[High Sensitivity Detector] This Muxbexby metal detector uses a highly sensitive sensor that can accurately detect metal items carried on a person, from small items such as keys to larger items like knives. 3:[BATTERY OPERATED] The detector is powered by one 9V standard battery (included) or a rechargeable battery (not included). There is one external charging port, but please note that the battery charger is not included. Avoid charging the detector when there is no rechargeable battery, as it may not function properly. Also, remember to turn off the detector when charging it. 4:[TWO ALARM MODES: AUDIBLE AND VIBRATIONAL] The security scanner has a mode switch that allows you to freely switch between the audible and vibrational alarm modes according to your needs and the detection environment. 5:[Professional after-sales service] If you have any questions during use, please feel free to contact us and we will provide you with 24-hour thoughtful service