Hand Held Security Metal Detector for Doormen Bouncers USB Charge Light Weight

Features: Very high sensitivity: sensitivity adjustment knob, can adjust sensitivity according to different occasions Easy to use, convenient, with a button to reset; Round handle design, beautiful and generous, high sensitivity. Light weight, large detection probe area, fast detection speed. Two alarm modes can be switched: LED sound and light alarm or vibration alarm. (Sound mode: bright red light + sound alarm. Vibration mode: bright red light + vibration alarm) The sensitivity can be externally adjusted, easy to operate, to adapt to more different occasions. With undervoltage indication function (blue LED standby status light is slowly extinguished). The extreme voltage and current automatic shutdown function (automatic shutdown when the host power is seriously reduced, the machine will automatically shut down when shorted) Charging indication function (lights red when charging, bright blue after charging) You can use the charging treasure power supply, to achieve the use of charging. Specification: Power: 5V (USB mobile phone charger charging) Frequency: about 30KHz Voltage: 3.7V Net Weight: 200G (including built-in lithium battery) Operating Temperature: -15C to +55C Standby Time: 200 hours Working Hours: 100 hours Color: Black Package included: 1 x Metal Detector 1 x USB Cable Details pictures: