Discovery 3 Metal Detector (630-3008) Specifications Faxback Doc. # 32363 Operating Frequency:................................................6.6 Hz Weight:.............................................................3 lbs. Power Requirement:.......................................Two 9 V Batteries Search Coil Size:..............................................7.25 Inches Specifications are typical; individual units might vary. Specifications are subject to change without notice. (IR-04/30/96)