Feature: 1. Improve Work Efficiency: Using microcomputer to control the calibration of the chip unit, the instrument and self test system can quickly and easily scan and test, which greatly improves the work efficiency and reduces the labor intensity of testing. 2. Good Features: The product has the strongest core, intelligent modular operation, powerful, convenient, high efficiency, quick and easy. 3. Precise Location Detection: This type of equipment has a high quality remote search system and a precise positioning detection system. 4. Sensitive and Stable: The detector has excellent sensitivity and stability. This detection method breaks through the traditional detection method. 5. Advanced and Practical: This equipment is currently the most advanced and practical detection method and an economical metal detection instrument. Specification: Item Type: Metal Detector Material: ABS Color: As shown in the picture Metal Detector Size: Approx. 26x11.5cm / 10.2x4.5in Accessory Size: Approx. 11.9x4cm / 4.7x1.6in Weight: Approx. 3050g / 6.7lb Range: Approx. 1000 Meter / 1094yd Depth: Approx. 15 Meter / 16yd Host Battery: Rechargeable Lithium Battery, 12V, 1600MAH (Built in Battery) Transmitter Accessory Battery: Rechargeable Lithium Battery, 9.6V, 1200MAH (Built in Battery) Transmission Frequency: 5.6-6KHz Signal Frequency: 400-470Hz Detection Type: Gold, Silver, Copper, and Gems Charging Time: 10-12 hours Application: Metal Search. Package List: 1 x Transmitter1 x Receiver1 x Antenna1 x Earphone1 x Earphone Box1 x Plug Adapter1 x Plastic Box1 x Manual Note: Before use, please stay away from residential areas, choose open areas in the wild, and put down mobile phones, gold, silver and copper jewelry, etc., to prevent interference with the detector. Prepare to begin: Hang the host vertically on your waist and try to keep it parallel to your legs, if you are holding the search instrument with your right hand, then hang the host on the right side, if you are holding the search instrument with your left hand, then hang the host on the left side. At the beginning of the search, the search instrument is tilted upward by 1‑3 degrees; When handheld search instrument, hand to clamp the body, do not shake; When moving, pay attention to the scanning speed, while the speed is slow, the number of walks back and forth is enough to ensure that the probe will not be deflected. If it moves too fast, it will hinder detection.