SMART SENSOR Handheld Mini Security Metal Detector 1. Detection Indication: buzzer alarm vibration headphone sound alarm 2. Detectable distance: 2.5 inches 50mm 3. Detectable metal size: 2x10mm 4. Detection frequency: 13KHz 5. LED light slarm indication: yes 6. Sound alarm indication: 75dB 7. Detection principle: electromagnetic induction 8. Detectable direction: both sides 9. Continuous working time: 6-10 hours 10. Sensitivity adjustment: yes 11. External headphone jack: yes 12. Operating environment: 0~40 degrees Celsius 13. Storage temperature: -10~50 degrees Celsius 14. Power supply: 9V rechargeable battery 15. Charger: input AC 100-240V 50-60Hz; Output DC 12V 200mA 3.5mm 16. Streamlined appearance, small body with great power, lightweight and easy to carry, without adding extra burden. 17. The shell is made of ABS engineering material, integrally molded, with strong impact resistance, fine craftsmanship, and durability. 18. Ergonomic design with thickened anti-slip handle to enhance friction and prevent slipping. 19. Triple alarm of sound, light, and vibration; unique recessed LED light design prevents damage to the LED light due to improper placement. 20. This detector is lightweight, has a large probe area, and detects quickly. It can detect all types of metal objects hidden on the human body, such as pistols, small knives, box cutters, jewelry, electrical components, etc. 21. The sensitivity of this detector varies depending on the volume, size, density of the detected metal object, and surrounding environment. 22. Weight: 270g 23. Dimensions: 413x77x39mm