The MD-3000 High Sensitivity Handset Metal Detector is the upgraded product. The product uses the CMOS-IC to detect the ferromagnetic objects (metal object) more quickly. Compared with the traditional Detector, it adopts more advanced audio-visual alarm and shock alarm with higher detecting sensitivity and more accurate alarm. And it also has more affordable price, more economies power consumption, longer working hours. Meanwhile, the Detector has nice out-look, small in size, light in weight, compactable, convenient in operation, and shock-resistance. So it is an excellent tool to help you to inspect illegal goods.