Winbest Premiere Edition Underwater Metal Detector. 8 feet (10 meters). The Winbest Waterproof Metal Detection features two operation modes adjustable knobs for sensitivity discrimination sensitivity and volume control for headphones (included) and a low battery indicator and a 10" search coil. You can have it set to detect any and all types of metal or you can have it set to search by ignoring the metal types you don't want. Operates on four x AA alkaline batteries (not included). The LED light flashes red when a target is detected and audio tone will have a distinct pattern depending on what has been detected. There will be no doubt whether you found something of value or not. The Winbest Underwater Metal Detector allows you to explore in the water for buried treasure someone may have left behind. Specifications for Winbest Premiere Edition Underwater Metal Detector: Manufacturer: Winbest Finish: Black Condition: New Features of Winbest Premiere Edition Underwater Metal Detector Submersible to 32.5' For Use in Fresh/Salt Water 10" Search Coil LED Lights Flash Red When Metal Detected Emits Audio Tone for Each Type of Metal Search Modes 2 Audio Tone ID Levels 1 Adjustment Length 16 in to 24.5in Product Weight 5.5 lbs Batteries Requires 8 AA Batteries (Not Included) Package Contents: Winbest Underwater Metal Detection Headphones Arm rest strap carrying case Winbest BE11924: Premiere Edition Underwater Metal Detector