1、Made with high strength metal for maximum durability 2、Anti-corrosion, effective response to all kinds of bad environment 3、Excellent performance gold search instrument,economic and practical, and its sensitivity and stability with international advanced level 4、Not only that, similar products can not be identified the type of metal, our product can do it effectively 5、Saving time, saving energy, saving money, finding more treasures Feature: Made with high strength metal for maximum durability. Anti-corrosion, effective response to all kinds of bad environment. Excellent performance gold search instrument,economic and practical, and its sensitivity and stability with international advanced level. Not only that, similar products can not be identified the type of metal, our product can doit effectively. Saving time, saving energy, saving money, finding more treasures. Equipped with high quality remote search system and precise positioning of the detection system, perfectly fit for archaeological and scientific research. Using the micro electric processor control chip unit,  intelligent modular operation, self-checking system can quickly and easily scan detection, greatly enhance the ground treasure the working efficiency. Specification: Condition: Brand New Material: Metal Box Size: Approx 37*27.5*8.5cm/14.6*10.8*3.3in Package Weight: Approx 2514g Search Distance: Approx 1200m Detecting Depth: Approx 25m Search system: microcomputer CPU control and reflection conduct Energy: 12V 1000-1600mAh Launch Frequency: 5.6-6KHZ Signal frequency: 360-440HZ Search Type: gold, silver, copper, precious stone Charging Method: It has installed rechargeable batteries, direct access charger Charging time: Approx 5-8h Package List: 1 * User Manual 2 * Aerial 1 * Metal Detector Receiver 1 * Launcher 1 * Charger 1 * Box2 * Key Note: 1. Please read the instructions carefully before using! 2. Please allow 1-3cm error due to manual measurement. Thanks for your understanding. 3. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 4. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.3D