Hi guys, I found an interesting deal at Groupon. The Handheld Metal Detector only need $15.99 with free shipping. Here is the link: Please Log In to view this link! Feature:High sensitivity: Sound or vibration alerts. Easy and convenient use, no adjustment necessary.Adjustable sensitivity: With low sensitivity switch, easily switch the sensitivity, realizing the detection of bulky goods from small goods, also can detect very small metal objects.Two-color indicators: Green for power, red for alert, if under voltage, the indicator is not bright or the detector keeps alarming.Powered by one non-rechargeable 9V battery (included), with an external charging port, you also can use your rechargeable 9-volt battery(not included).Perfect for security, safety, indoor/outdoor events.