1、GOOD PERFORMANCE: The metal detector has adjustable sensitivity, large detection area, fast speed, high sensitivity, and can detect small objects. 2、DOUBLE ALARMS: With controllable sound and vibration effects, it can quietly identify potential hazards, simple and convenient in operation. 3、280MAH BATTERY: The detector is equipped with 280mAh large capacity rechargeable battery, which can work continuously for more than 40 hours. 4、WITH INDICATOR: The metal detector is equipped with indicator to detect the size of the object and display it in different colors (green to red). 5、APPLICABLE PLACES: Used in railway stations, border defense, schools, factories, airports, and for detecting electronic products, metal objects, etc. Item Type: Metal Detector Battery: 1 x 6F22 280mAh rechargeable lithium battery (battery included) Battery Life: Continuous operation for more than 40 hours Alarm Mode: Vibration and buzzer double alarm Measuring Range: Within 12cm / 4.7in Detection Distance: 1. Pin: Approx. 30-50mm / 1.2-2in 2. Type 64 Pistol: Approx. 200mm / 7.9in 3. 6in Dagger: Approx. 250mm / 9.8in 4. 20mm Diameter Steel Ball: Approx. 120mm / 4.7in Alarm Indication: Flashing Green LED: Power on Flashing Red LED: Target detected Continuous Yellow LED: Low voltage indication Metal Indicator LED: The indicator light changes from green to red due to different sizes of detected objects Alarm Signal: Sound Mode: Buzzer and red LED, metal indicator LED Vibration Mode: Vibration and red LED, metal indicator LED Power Consumption: Maximum 270MW Working Frequency: 22KHZ Standby Current: <5MA Working Temperature: -10℃-65℃ Reset Time: 0.5s, Automatic 1 x Metal Detector 1 x Battery