Manufacturer SpecificationsGeneralOperating Frequency: 22KHzOperating Current: <50mAOperating Voltage: 7-9VOperation Current: Audio and LED<47mA， Vibration<103mAQuiescent Current: <7mADetection Distance: 50-200mmAlarm Indication : Audio alert and LED indicator and vibrationAudio Alarm On/Off SwitchVibration Alarm FunctionPower Source: 9V Battery (Not Included)Battery: 9Vx1 6F22 (Not Included)DimensionsMain product dimensions: 410x85x45mm (L x W x D)Main product weight: 365gWeight/dimension is for the main item of this boxed product， to help you compare product sizes before buying: please do not base your shipping calculations on this price - shipping prices depend on your cart contents， shipping destination， and shipping method: please use the checkout to select options and preview shipping price for your total order.Package ContentsMetal DetectorHolsterUser Manual