Wireless Portable Fish Finder: Made of ABS material, designed to be compact and portable for easy use on fishing trips. Delivers reliable performance with a frequency sonar system and an LCD screen for clear readings. 40m Sonar and Depth Alarm: Provides a depth range from 6m to 40m, giving accurate information about depth and water conditions. Includes a depth alarm to notify you when fish are within your target range. Fish Capture: Reduces the need to watch the float for long periods. Enables quicker, more efficient capture of fish, improving your overall fishing experience. Multifunctional Fishing Helper: Delivers essential data such as fish depth scale and water temperature, along with additional relevant information. Helps you make informed decisions while fishing. Use scenarios Freshwater lake or river fishing from a small boat or kayak: Use the sonar to identify structure and target active depth zones, increasing chances of locating fish efficiently. Coastal or shore fishing: Monitor depth and surface water temperature to choose likely spots and optimize casting depth for different species. Portable on trips or night fishing: Rely on the LCD readout for clear visibility in variable light, with the depth alarm aiding in targeting fish at specific depths.