Features Simple operation: the volume of the speaker and headset as well as the length of the probe are adjustable, easy to use and highly efficient. Better Detection The metal detector is able to detect iron nails, iron sheets, aluminum rings, small aluminum products, coins, etc. Reliable Use The waterproof probe disc allows use in shallow water, suitable for gold detection, security inspection, etc. Working Mode: Comes with 2 working modes, all-metal mode and recognition mode, which is more than enough to satisfy your work needs. EASY CARRYING This metal detector is designed to have light weight and compact size, convenient carrying allows for indoor and outdoor use. Specification: Item Type: Metal Detector Item Model: GT6100 Battery: 2 x 6F22 9V alkaline batteries, supplied without battery. Frequency: 5.0K Hz. Static current: 10mA. Maximum: 70mA. Voltage: 7.2-9.6 V. Sensitivity: 25 American cents: 130 mm Display mode: mechanical pointer mode and sound mode. Telescopic length: 30.7 to 42.1 inches Probe diameter: 6.5 inches. Headphone jack: 3.5 mm, with headphones. Detection object: Metal such as iron nails, iron sheets, aluminum rings, small aluminum products, coins, gold, bronze, silver. Applications: For gold detection, desert detection, security inspection, archaeology, treasure hunt, beach detection. Package list: 1 x Metal Detector 1 x search coil 2 x connecting rod. 1 x user manual (English language not 1 x Helmet 1 x shovel. 1 x shovel bag. Note: Please note that the new type and old type of this product will be sent at random, and make sure you do not mind before ordering. Package List 1 x Metal Detector 1 x Searching Coil 2 x Connecting Rod 1 x User Manual 1 x Headphone 1 x Shovel 1 x Shovel Bag