·A fish finder sends utrasonic downward to the seabed and collects reflected signals to know two very important information to angles: 1 If there is any fish activities in the area, 2 How deep is the water and if there is fish activity,how deep the fish layout underwater 3, the structure of seabed underneath.

·Hand-held & Portable : The size of Lucky fish finder is designed for just one hand held. A neck strap in the package which allows you to wear it around neck when you are busy fishing. Meanwhile, internal sensitivity adjustment makes fishing possible both in clear water or turbid.

·Fish Finder and Depth Finder : It is a portable fish finder that could display approximate fish location and water depth. The sonar transducer can be attached to the hull of kayak or boat in order to understand the changing of water depth when you are moving by.

·You can set the fish finder to notify you when the water depth is less than preset and it is very useful if you are riding a kayak or canoe in the river to prevent run aground

·Sensitivity adjustment function helps getting accurate depth data no matter fishing in clear water or turbid. It also helps fishing transducer distinguish small fish and big fish by setting different sensitivity levels.

·1,Casting the portable depth finder wired sonar transducer into water. 2，Turn on the portable fish finders and select suitable settings. 3，You will get the underwater information from the portable fish finders without going into water.