Feature: 1. [2 Operating Modes] This gold detector features full metal mode and identification mode, you can choose to use according to different situations. 2. [Sound Display] Equipped with headphone jack, you can connect stereo headphone(not included) and operate, both the volume of speaker and headphone can be adjusted. 3. [Mechanical Pointer Display] You can search for metal objects based on the mechanical pointer when in noisy places, the detector will wiggle when find metal items. 4. [Waterproof and Adjustable] The detection disc is waterproof design, you can use this detector in shallow water, the rod length can also be adjusted, very convenient for operation. 5. [Wide Application] This metal locator can be widely use for gold detection, desert detection, security inspection, archaeology, treasure finding, beach detection, etc. Specification: Item Type: Underground Metal Detector Material: ABS Model: GT6100 Battery: 2 x 6F22 9V alkaline battery (delivered without battery) Frequency: 5.0 KHz Current: Static: 10mA Maximum: 70mA Voltage: 7.2-9.6V Sensitivity: US 25 Cent: Approx.130mm/5.1in Display Mode: Mechanical pointer mode, sound mode Telescopic Length: 30.7-42.1in Detection Disc Diameter: 6.5in Headphone Jack: Approx.3.5mm/0.1in Detection Object: Metal (iron nails, iron sheets, aluminum rings, small aluminum products, coins, gold, bronze, silver) Applications: Gold detection, desert detection, security inspection, archaeology, treasure finding, beach detection. Package List: 1 x Underground Metal Detector1 x Search Coil2 x Connecting Rod1 x Manual