Description: Easy to operate, working water depth up to 100 meters Once detect fish immediate give you reminder, accuracy up to 98% Show water depth, fish location, and bottom grass and rock User can select sensitivity,depth units, and fish alarm setting Environmental protection technology?no harm to ecology Specification: Material: Plastic Size(LxWxH): Approx. 26x17.5x6.5cm/10.24x6.89x2.56inch Display: 2inch Anti-UV LCD Depth Capability: 328feet(100m) Power Requirement: 4xAAA alkaline batteries(not included) Waterproof design: level-4 (spray-water-proof) Operational Temperature: -14 °F to 122 °F(-10 °C-50 °C) Package Includes: 1 Set Fish Finder(include 1 machine, 1 float, 1 cable, 1 transducer)