brand new and high quality Features: Simple operation, exquisite design, easy storage and low failure rate. Sensitivity is easy to detect a metal object of size (or even smaller). Sensitivity can be adjusted according to site requirements. There is a battery undervoltage indication (the LED light is for always on). It is commendable that this model is the most cost-effective in the same style of products. The alarm mode has two alarms: sound and light. Handheld and light weght,easy to use. Low power consumption,Beep sound when metal detected. Application: This model has become a regular security anti-theft device for industrial enterprises and electronic digital production enterprises. It can be used for public security in ports, railway stations, docks, prisons, customs and frontier defense as well as quality control of medicine, food and other commodities. Specification: Operating Frequency: 25KHz Sensitivity: A25 cent coin detected 65mm Iron pipe-tube in 20mm-120mm(Diameter) Powered by: 9V battery x 1(Not included) Tuning Auomatic Alarm mode: sound and light synchronization alarm Power consumption: 220mW Working current: less than 8mA Working temperature: -10C-50C Material: Plastic&metal Dimensions: Handle: 3.5x26cm/1.38x10.24inch Coil diameter: 13.5cm/5.31inch Color: Black Quantity: 1 Pc Note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 x Folding Metal Detector(with retail package) 1 x User Manual