TTLIFE Pulse Induction 750 Underwater PinPointer 30M Fully Waterproof Metal Detector with Vibration LEDBrand: TTLIFE Features: Underwater Metal Detecting Detect the exact location of buried metal objects. Allow hunting metal in water, on land or in any type of soil, including black sand. Communicate with Vibration & Light, when a target is located, the PI iking750 signals with pulses of vibration and flashes of bright white light. Tilt On Off The PI iking750 uses an easy tilt on off system that eliminates the need for fragile push button switches.