Specifications: 1) depth readings from 0.7m to 50m with icon display 2) small round transducer with 7m cable,45-degree beam angle 3) romovable float 4) led backlight display 5) 4xaaa batteries, battery save mode, battery strength indicator 6 )high/low sensitivity setting 7) fish depth scale, audible fish alarm 8) user selectable meter or feet readings 9) water resistant design 10) able to shoot through boat hull and clear ice 11)can display different bottom (grass, sand, rock) in the sea 12)can resist the interference from the grass when use in lake.