Pulse Induction Metal Detector PI Depth 3m Accessories: 50 cm round coil and 1m square frame 21v charger The device is pulse induction, runs on a 5000 mAh battery Twenty-one volts Runs for 12 continuous hours Easy to use Automatic balancing and manual reset button It has a settings menu to adjust the device Depth for iron coin: 30-35 cm Depth for 50 iron piece: 250-270 cm with the 1m frame And with a 1.40m frame, it reaches 330 cm for a 50 iron piece It has an iron rejection feature, it detects gold and copper And depending on the soil Sale in Tabuk 6 months warranty for manufacturing defects Maintenance is also available The device is good and sold on trial Approximately sold 18 or 20 units, excellent device and good price