Additional Details ------------------------------ Product description: Fisher Labs 1280-X Aquanaut Underwater All-Purpose Metal Detector with 10" CoilFisher Lab's 1280-X Underwater Metal Detector - Proven Performance on Land or in WaterThe deep-seeking, submersible, Aquanaut features automatic turn on-and-gooperation for water or land use. VLF-IB discrimination, target strength LED and Fisher Lab's quartz-crystal circuitry provides up to 75 hours of battery life. For added ease of use, the control box converts to a belt :Turn On & Go OperationSubmersible up to 250 feetFull Range Target DiscriminationAdjustable Sensitivity ControlAudio and Visual Target ResponseVLF Discrimination8" and 10" Coil OptionsUp to 75+ Hours of Battery LifeOperating Frequency: 2.4 kHz2-Year Limited Warranty Controls:Power On-Off/Volume - Dual Function Potentiometer and SwitchBattery Test/Sensitivity - Dual Function Potentiometer and SwitchVLF-IB Discrimination - Full Range Trash Rejection Potentiometer Color: Black Material: Metal