MD-3010 LED Display Underground Metal Detector 1.BATTERY: 2*9V Type: 6F22 S006P OR EQUIVALENT 2.OPERATING CURRENT: STANDBY-30Ma MAX-60mA 3.OPERATING VOLTAGE RANGE: 7.1-9.6V 4.OPERATING FREQUENCY: 7.5KHZ+/1KHZ 5.SENSITIVITY: Min.13cm (Test coin C25) MAX.detect objects up to 2M6.AUDIO FREQUENCY: 262Hz(do) 262Hz(do) 294Hz(re) 294Hz(re) 330Hz(me) 330Hz(me) 349Hz(fa) 349Hz(fa) 392Hz(so) 392Hz(so) 440Hz(la) 440Hz(la) 494Hz(ti) 494Hz(ti) 523Hz(do) 523Hz(do) 7.TEMPERTURE RANGE -20.C-60.C 8. SIZE: 550mm(L)*355mm(w)*153mm(H) 9.GROSS WEIGHT: 3Kg 10. NET WEIGHT: 1.37Kg