MD930 High Sensitivity and Accurate Positioning Underground Metal Detector with Backlight, MD9301. Material: ABS plastic + aluminum 2. Sensitivity: 8 levels of sensitivity adjustable 3. Detection object: metal (including iron, aluminum, coins, gold, copper, silver) 4. Detection method: identification, fixed point 5. The discrimination range of SET is adjustable: 7 different metal indications. (And you can choose whether to exclude 7 kinds of metal.) 6. Power supply: 2 x 9V batteries (not included) 7. With backlight: yes Specification: Package