Underground Metal Detector with Compass 1200M Range 30M Depth Sensitive Handheld Treasure Finder Scanner for Copper Gold Silver Gemstones Item Type: Metal Detector Material: Aluminum Weight: Approx. 1195.00g / 42.15oz Color: Gold Working State: 1. With the detector turned on in full battery situation, the sensor switch is turned on. Press the corresponding button for the item to be detected on the sensor, adjust the depth and range search function of the detector, and start the detection process. 2. When detecting the specified item in a stable handheld situation with no other interference, the detector will sway from side to side. The amplitude of the sway will increase when the detected item is larger. Product Size: Approx. 32.5x16.5cm / 12.8x6.5in Transmitter: Approx. 11.3x7.5x3.5cm / 4.45x2.95x1.38in Range: Approx. 1200m / 3937ft Depth: Approx. 30m / 98.43ft Battery for Detector/Transmitter (Battery Not Included): 9V battery x1 (note: rechargeable batteries are recommended for convenience) Search System: CPU microcomputer control, reflecting conductivity Compass: A tool used to indicate direction Transmitting Frequency: 5.6 to 6KHz Signal Frequency: 360 to 440Hz Detection Types: Gold, silver, copper, gemstones