Max Detection: 5-50 m Detect Range: 100-1000 m Power: 850mA Frequency: 433 MHz +/-150 KHz Operating Humidity: 0 ~ 95% (non-condensing) Rechargeable Battery: Continuous working 48 hours Usage: Treasure Hunting Detection type: Gold. Silver. Jewlery Certification: CE/ROHS/ISO9001 Warranty: 2 Years Show More