With this fish finder, you can easily obtain information about the depth and condition of the sea, scale of fish depth and size of fish distinguish, water temperature, fish and alarm depth, etc.Features:This device is equipped with a sonar frequency system with LCD screen for powerful performance up to 120 feet.Audible fish and depth alarm, depth from 2ft to 120ft.Compact, lightweight and portable to fit in your pocket well.Can be used for boat fishing, platform fishing, long-distance fishing and ice fishing.100m\/328ft wire-less operating , 45m\/147ft depth capability.90 degrees beam angle in 125Khz (Wire-less).Wire-less, no more long & heavy cable for transducer.Specifications:Batterys: 4*AAA batterys (not included)Powers: 0.1WDepth : 2-120FtWire-less Operating : 100mSonar Frequency: 125KHZSonar Beam Angle: 90 degreeRadio Frequency: 433.92 MHzOperation Temperature: -20~+70CItem Size: 125*72*30mm\/4.92*2.83*1.18inItem Weight: 205g\/7.23ozPackage Size: 250*110*80mm\/9.84*4.33*3.15inPackage Weight: 350g\/14.11ozPackage List:1*Fish Finder1*Transducer1*Antenna1*USB Chargings Cable1*Strap1*English Manual