Metal detection
Mobile phone detection

DC9V, 6f22ND battery
Power consumption: 0.008ma/time
Sleep and wake-up function for personal use
Effective at a distance of about 7CM
Frequency: 22KHZ
Fully charged can be used for more than 40 hours.
Sound, light, and vibration alarm.
With DC5.5 charging port
Sound/light/vibration alarm
Sensitivity switch