Specification:MD-300 metal detector is a mini-type hand held metal detector， mainly for security check in important places like customs， airport and court. It will gibe an alarm sound and vibration with low voltage power alarm. 100% brand new and high qualityDetect ferrous and non-ferrous metal such as copper，zinc，aluminum，tin，silver etc. Light weight and portable design Good sensitivity Anti-sliding handle design，with a rope hang easy to handle and useBuilt-in circuit design，ensure high sensitivity when usingLow voltage alarm with continuous alarm sound given by the buzzerPowered by 1x 9V rechargeable battery(Not included)Detection Indicator: Sound/Vibration + VisualDimensions:Approx. 35cm x 14cm x 4.5cm(LxWxH)Color:As shown in the pictureWhere to use:Airport， station， dock for security check; Custom， police， border， security， government department; Bank， hotel， KTV， club， entertainment place; Medical & food industry for quality inspection; Big event， sports， Fair， for security check; Noble metal detecting， in gold， silver or jewelry industry; Anti-cheating in examination.Included:1 x Metal Detector1 x Chinese and English User Manual