Features:1. Sonar beam: 200kHz sonar beam, signal stability, effectively prevent signal interference.2. Fish Alert: Allows you to catch fish immediately when you're not looking at floats for long periods of time.3. Optional Sensitivity: Choose fish information easily according to your different needs.4. Underwater structure display: providing information and environment below water level to help identify fish targets.5. Battery saving mode, fish depth, scales and size distinction.Specification:Condition: 100% Brand NewItem Type: Fish FinderMaterial: ABS PlasticModel: TL88EDisplay Type: TN/ UV Protection LCDPower Supply: 4 x AAA Battery (Not Included)Sensor Beam Angle: 45Depth Range: 0.7-100m/2-328ftWorking Temperature: -20 - +70Size: Approx. 12 x 6.5 x 3cm / 4.72 x 2.56 x 1.18inchWeight: Approx. 450gPackage List:1 x Fish Finder1 x Round Sensor1 x Screw Bolt1 x Nut1 x User Manual.