MD-91 Professional Undreground Metal Detector Gold Detector Diamond Stone Treasure Targeting Detector Great Sensitivity

MD-91 Professional Undreground Metal Detector Gold Detector Diamond Stone Treasure Targeting Detector Great Sensitivity Features: 1. Rechargeable, Battery Life L.E.D lights, charging indicator lights. 2. Full-control Ground Balance. 3. Distinguish Ferrous and Non Ferrous metal 4. Be capable of remarkable depth and extreme sensitivity in the worst grounds. 5. Waterproof 15" search coil. Other accessory 12" coil available. 6. Threshold Control. Accurately adjust the audio to hear the smaller, deeper signals. 7. Frequency Control adjusts for hunting near power lines, microwave or other environmental interference. 8. English Panel, easy operation Specification: Broadcast frequency: 6.99 kHz Signal frequency: 437Hz Small coil: 25-30 cm (25US cent test) Maximum detection: 15.2cm Large coil: 3.0-5 meters (This conclusion is obtained by testing an aluminum sheet (60 cm * 60 cm * 1 cm) buried in dry soil.) Power supply: 8pcs 1.5V batteries Operating mode: Ground balance mode; Discrimination mode. Size: L*W*H (800-1000)*300*300 mm Color: green Package Included: 1 Metal Detector 1 x English User Manual Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Details pictures: