without battery The multifunctional handheld metal detector is a high-performance metal detector specially designed for security. Compared with traditional detectors, it is made of ABS engineering plastics at the same time, using the special design of the working surface of the detection area, and the more advanced sound and light alarm device and vibration alarm device, which have higher sensitivity, more accurate alarm, more energy saving, work longer and stand out in its class with its unrivaled streamlined design (without battery) Scope of application: security inspection of airports, stations, customs, docks, stadiums (halls), border defense, security services, detection of precious metals (such as gold and silver jewelry factories, electronic component factories) and security places that need to be detected. Features Streamlined design, beautiful and generous, high sensitivity. Light weight, large detection probe area and fast detection speed. Two Alarm modes are available: LED light chime alarm or vibration alarm. Sturdy and durable, free fall from a height of one meter without damage. The voltage indicator/charging indicator will remind you in time. After installing the rechargeable battery, the product can be fully charged directly. Detection Distance: The sensitivity of this detector varies depending on the volume, size, density, environment and other factors of the detected metal object. Alarm Indication Steady yellow LED: Target detected Flashing green LED: Power on Flashing red LED: Low voltage indication Alarm Sound mode buzzer and red LED Vibration mode Vibration and LED red Temperature: -15 ~ 45 degrees Celsius Frequency: 25Hz Reset time: 0.5 seconds, automatic Dimensions: Width: 77 mm, Height: 26 mm, Length: 375 mm Battery: One 9V alkaline or lithium battery. Battery life 30-40 hours (lithium battery) 28 hours (alkaline batteries) Delivery quantity: 1 piece (without battery)