Accurate Depth Reading Our portable fish finder uses advanced sonar technology to provide precise and reliable depth readings, allowing you to accurately determine the water depth and locate potential fishing spots. (4XAAA battery not included) RealTime Temperature Display Equipped with a temperature sensor, this fish finder can accurately measure and display the water temperature in real time. Knowing the temperature can help you understand the behavior of different fish species and improve your chances of a successful catch. EasytoUse and Portable Design Designed with simplicity in mind, our fish finder features an intuitive interface and userfriendly controls. Its compact and lightweight design makes it easy to carry and install on any fishing boat, kayak, or dock. Powerful Sonar Sensor The included wire sonar sensor transducer delivers powerful and reliable sonar signals, ensuring accurate detection of fish and underwater structures. With its wide coverage range, you can explore larger areas and increase your chances of finding more fish. Practical use scenarios Boating or fishing in unfamiliar waters: use accurate depth readings to identify depth transitions and underwater structures such as dropoffs and weed lines to target productive spots. Kayak, canoe, or small craft: portable and easy to mount, ideal for quick scouting of nearshore areas and shorelines. Dockside or pier fishing: realtime temperature display helps determine favorable conditions and select targets based on fish activity and water temperature.