Features 1、Use high‑quality components to make a large detection range, with start‑up and detection warning lights. 2、Easy to use, high‑sensitivity metal detector, clear and sonority sound, convenient to detect metal. 3、It is suitable for safety inspections in public places, schools, bars, KTV factories, convention and exhibition venues, stations and docks. 4、It has a long battery life, saves electricity and can work continuously for more than 40 hours, and there will be an automatic continuous alarm when the battery is exhausted. 5、The performance is complete, there is a sound prompt function for turning on and off, it also has an external charging connector and sound light, vibration switch. Specification Item Type: Metal Detector Material: ABS Model: MD-1165180 Power Supply: 6F22 1 x 9V (not included) Purpose: Metal detection Charging Method: AC9V/DC10V universal round hole charger (not included) Working Time: 40 hours Working Temperature: -37℃~70℃ Audio Frequency: 2kHz Sensitivity Adjustment: Automatic Package List 1 x Metal Detector(Battery Not Included)