NEF-600 Mineral Gold Detector & underground water Detector: 1. Automatic noise reduction, super 5 shifts anti-jamming design, fit for various geological conditions. 2. 5 frequencies or 30 frequencies measurement synchronously. 3. Operating functions are all on the LCD screen, easy operation. 4. Automatic measurement, data storage and curves mapping. No need to record data and the data can be transferred to U disk directly.. 5. It can store 5 frequencies measuring data of 30 curves and multiple frequencies data of 30 curves, the data and curves can be displayed. 6. Use film switch panel to make usage more stable and convenient, the appearance is beautiful. 7. Power supply: by large capacity chargeable lithium batteries. 8. Electrode test and power monitor function. 9. Measuring range: 0.001mV~355mV (auto range transfer) 10. Resolution: 0.001mV 11. Measuring voltage accuracy: ±1% ±1LSB 12. Measuring currency accuracy: ±1% ±1LSB 13. Input impendence: 50M 14. Working temperature: -10°C~+50°C 15. Working humidity: 95% 16. Whole weight.2.5kg, size: 31cm*23cm*10.8cm. 17,detect depth:300-400M.