Features: 100Feet Fully Waterproof Pin Pointer -- With Pulse Induction Technology(PI), Allow hunting metal in water, on land or in any type of soil, including black sand. Sealed design allows detecting in the rain or underwater to a deepth of 100feet, perfect for divers! Vibration & Light Alarm -- When the metal detector find metal, it will release Blue LED Light + Vibration to remind you; Target Distancing will respond by the viration frequency. The closer the tip is to a target the higher the vibration frequency. Easy Single Hand Operation -- Tilt On/Off. Hold unit with the tip up to turn on. After use, invert the detector tip to turn off. There are also a wrist strap for secure hanging. One hand can eal with all the gold detecting work. Scop of Application -- Search for Metals, Keys, Coins, Jewelry, Relics, Needle/pin and much more, on Beach, Mountain, Diving searching, Archaeology, Public security check, Police detecting, Pinpointing decoration line, Waste Iron Recovery, etc. Low Battery Indicaton & Stable Performance -- When the battery is low the unit will shut down automatically indicated by 4 long pulses. Advanced circuitry maintains detection distance throughout the life of the battery. Specification: Color: Black + Yellow Material: ABS Plastic Detection Type: Pulse Induction (PI) Search Mode: All Metal Alarm Mode: Vibration & Blue LED Light Waterproof: 30M/100Feet Power Supply: standard 9V battery (Not Include) Overal Length: 38cm/15in Tip Diameter: 5cm/2in Item Weight: 375g/12oz Packing List: 1 * 740 Metal Detector 1 * Wrist Strap 1 * User Manual