Feature: 1. [High Efficiency] With excellent sensitivity and stability, strong core, intelligent modular operation, powerful, convenient, advanced and efficient. 2. [High Accuracy] With high quality long range search system and accurate positioning detection system, the measurement results are accurate, so you can use it with confidence. 3. [Self Checking System] Underground metal detector using microcomputer to control chip unit calibration, the instrument and self checking system can scan and test quickly and easily. 4. [Labor Saving] This metal scanner can greatly improve the work efficiency of the treasure lovers and reduce the labor strength of detection. 5. [Power Display Function] Metal detector with power display function, which is convenient to know the available time and power of the machine in time. Specification: Item Type: Metal Detector Material: ABS Host Size: Approx. 27 x 16 cm / 10.6 x 6.3 in Display Size: Approx. 9.5 x 5.5 cm / 3.7 x 2.2 in Transmitter Size: Approx. 11.9 x 8 x 4 cm / 4.7 x 3.1 x 1.6 in Voltage: 100-240V Range: Approx. 1200m / 3937ft Depth: Approx. 25m / 82ft Host Battery: NiMH rechargeable battery, AAA, 1600MAH (Battery Included) Transmitter Accessories Battery: NiMH rechargeable battery, AAA, 1200MAH (Battery Included) Transmission Frequency: 5.6-6KHz Signal Frequency: 360-440Hz Detection Type: Gold, silver, copper, and gems Charging time: 10-12 hours Application: Metal finding Weight: Approx. 3300g / 116.4oz. Package List: 1 x Host Controller With Display Screen (Battery Included)1 x Receiver (Battery Included)2 x Antenna1 x Earphone1 x Headphone Box1 x Plug Adapter1 x Plastic Box1 x Manual