Features 1、Communicates with vibration and light - LED light indicator and vibration indicate the detection of metal. 2、Pulse induction technology (PI) - Allows in salt water or in any type of soil, including black sand. 3、Detection depth stability - quality circuitry maintains detection distance throughout the life of the battery. 4、Target distancing - As you get closer to the target, the pulse of vibration and light will increase in strength. 5、Automatic tuning - The state of the art microprocessor controlled design requires no adjustments of any kind. 6、Rain Proof - Fully proof for 30 meters underwater. Best for seeking treasure undersea. 7、Belt loop and wrist strap - Includes a belt loop to attach to any common belt clip as well as a wrist strap for added safety. 8、Pulse induction search coil - Wider detecting distance, high sensitivity, even seek one tiny needle. 9、Solid construction - Locate target easily in sand, fresh and salt water. 10、Seeking treasure undersea - White LED indication, vibration indication. 11、Search coil - Design pinpointer, better detecting area and depth. Specification Specifications: Material: ABS Color: yellow+black+grey Detection mode: pulse induction (PI) Detect objects: all metal (iron, aluminum loop, small aluminum product, gold, bronze, silver) Alarm mode: vibration and white LED light Proof: 30M/98ft Tuning: automatic Sensitivity: 25 cents coin: 10mm; one dollar coin: 15mm Frequency: 6.8KHz Current: standby: 8mA, Maximum: 20mA Operating current: 0.03A Operating voltage: 9V Operating temperature: -5℃ to +55℃ Battery: 1 * 6F22 9V battery (not included) Application: testing metal foreign body of fuel and food, detection of underground pipeline & line, archaeology, exploration, found buried treasures of gold, silver and metal artifacts, the acquisition of scrap metal industry, checking metal foreign bodies in delivery and luggage. Item size: 420 * 112 * 105mm / 16.5 * 4.4 * 4.1in Item weight: 391g / 13.8ounce Package List 1 * Metal Detector 1 * User Manual