ESH-10 Handheld Metal Detector Product Security Detection Detector 1. Frequency: 30KHz 2. Reset time: 0.5s, automatic 3. Battery: 9V alkaline or lithium battery (not included) 4. Power consumption: 270mW 5. Operating current: less than 50mA 6. Alarm mode: sound and light synchronization alarm or vibration alarm 7. Alarm indication: - Continuous yellow LED: has detected the target - Alarm signal: sound mode, buzzer, red LED - Flashing green LED: power on - Vibration mode: vibration and red LED - Flashing red LED: low voltage indication 8. Weight: about 290g 9. Size: about 37.8 x 8 x 3.5cm Features: 1. Simple and easy to operate, can detect all kinds of metal objects hidden in the human body 2. Fine workmanship, lightweight and portable, wear-resistant and durable, large detection area, rapid response 3. Free choice between sound alarm and vibration alarm switch 4. Simple to use, three gears: on key, sound alarm key, vibration alarm key 5. Low voltage indication 6. Easy to change the battery 7. With charging jack 6. Safety: harmless to cardiac device wearers, pregnant women, floppy disks, film, video tapes, etc.