Lightweight and Portable Well-designed compact and lightweight, portable with string wristband, ideal for important occasions: park, school, museum, airport, subway. Fixed-point precise positioning The High sensitivity detection improves small target detection, it can work in sand, lawn soil or water, quickly locate coins, cash, jewelry and gold. Don't waste time digging in the wrong place to find buried treasure or gold coin. Three battery power indicatorgreen for normal(strong power), yellow for suggest(strong power) low) and red for battery replacement or charging (dead power). Audio Buzzer NoticePower powered by 9V battery (included), Two mode safety indication, you can choose either an alarm signal or a vibration signal. Smart vibration and sound indicators ensure you won't miss any alerts in a noisy environment.