Feature:1. High Sensitivity: This is a high performance handheld metal detector wand designed to meet exact security requirements. With a large detection area, fast detection speed and high sensitivity, it can detect objects as small as staples.2. 2 Alarm Modes: Controllable sound and vibration effects are another highlight, and security personnel can quietly identify potential hazards. With power switch, selectable sound and vibration, easy and convenient operation to meet your needs in different occasion.3. Visual Metal Detection Indicator: The ZL 3000D compact handheld metal detector features a detection indicator right in the middle of its body for detecting the size of the detected object and displaying it in different colors (green to red). The professional alarm strength indicator displays the alarm level according to the size and distance of the metal.4. Battery: Metal detector wand contains a 6F22 standard dry battery with a large capacity of 280mAh, which can be used continuously for more than 40 hours.5. Widely Used: Handheld metal detector is used in railway stations, border guards, schools, courts and factories, airports and border security for the security inspection and detection of prohibited items, electronic products and metal objects.Specification:Item Type: Handheld Metal DetectorBattery: 1 x 6F22 280mAh dry battery (shipped with matching battery)Battery Life: Over 40 hours of continuous operationFrequency: 50KHzMetal Detection: 30 to 80mm (1.18 to 3.15 inches)Alarm Mode: Vibration and beeping double alarmMeasuring Range: Within 12 cm (4.72 inches).Package List:1 x Metal Detector1 x BatteryNote:The product does not support charging, you need to replace the battery. If rechargeable batteries are required, a separate rechargeable battery and battery charging base are required.