[BM-3621] Function: Only knowing the number of underwater fish can you catch more fish. This fish finder can help you achieve this. It is suitable for all types of boats and different environments and is a good choice for ice fishing, sea fishing, mud fishing, and river fishing. Parameters: Sensor fish finder, can detect the area between 0.6 meters and 36 meters underwater. The detection angle is 90 degrees, the working environment is -10-60 , and the battery life is 10 hours. You don't need to drill holes in your fuselage to install sensors, nor do you need long harnesses to connect devices and sensors. All you have to do is tie it to a fishing line and throw it into the water. It supports cell phone connection for control and display. Electronic fish finder Cell phone fish finder Underwater surv Features: A new type of fish finder that is connected Characteristics: Name: Fish Finder Size: 68 * 68 * 50CM Depth: 0.6-36M (2.5-120 feet) Distance: 30M Operating temperature: -10-60 ? Beam angle: 90 degrees Packaging: 1. Sensor 2. An instruction manual 3. A charging cable Note: The product does not contain a smartphone.