Description: 【Portable】: Portable handheld wireless fish finder with 3.5 inches colorful display screen shows underwater contour, water depth, water temperature and fish size with depth 【Depth Finder Function】: Sonar finders detecting depth range of the fishing sonar is from 2.6ft(0.8m) to 164ft (50m) with detecting degree 【Multipurpose】: This fishing finder can get the approximate location of and the depth of water and also can detect and display grass, short & tall weeds, sand, and rocks on seabed 【Easy to Use】: The detachable float is easy to disassemble, helping you find prey more easily 【Application】: Use this portable boat depth finder for various fishing occasions like boat fishing, kayak fishing, sea fishing, ice fishing and more Specification: Material: PP Display size: 3.5 inches Display resolution: 480*320 Languages: Chinese/English Measurement units: meters/feet Power input: DC5V/DC12V Operating temperature: -20°C to 60°C Storage temperature: -20°C to 70°C Detection depth range: 0.8-50m Sonar frequency: Approximately 125kHz Sonar radiation angle: 105 degrees Weight: Approximately 80g Charging voltage: DC5V Charging time: Approximately 2h Size Chart: 15.8cmx10cmx4cm/6.22inchx3.94inchx1.57inch Package Includes: 1 Fish Finder 1 Probe 1 Charging Cable Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.