Pi-iking 750 communicates with vibration and light in the field of pinpointer handheld metal state, including pulse induction (PI) technology that is waterproof to a depth of 100 feet. The self - calibration microprocessor control circuit does not need adjustment. The unique seal design allows in any environment that contains grass, mud, dust, sand, black sand, or even fresh or seawater Feature - Color: As Shown. - Material: plastic - Size: 42x11x11cm - Voltage : 9V - Measuring range ：10m - Communicates with vibration & light - (When located the Vibra-iking750 with of vibration and flashes of bright from white ) - Pulse Induction Technology (PI) - (Allows hunting in salt water or in any type of soil, including black sand) - depth stability - (New Advanced circuitry maintains distance throughout the life of the battery) - distancing - (The of vibration increase in frequency as the probe approaches the precision pinpointing) - Automatic tuning - (The state of the art design requires no adjustments of any kind) - Waterproof - (Fully waterprooof for 30 meters underwater . Best for treasure undersea) Package list: 1 x Pi-iking 750 1 x English Manual