The LS-2W series is an innovative invention by Lucky® fish finder that frees you from needing to carry a screen with you. Instead, the LS-2W turns your smartphone’s screen into a fish finder display! This WIFI fish finder is based on sonar technology. The WIFI transducer sends a sound wave signal and the returned "echoes" are transmitted with WIFI technology to your phone, tablet or other intelligent devices. All the underwater information, including water depth, water temperature, bottom contour, and fish locations are displayed on the screen. It is immensely popular among both amateur and professional anglers and fishing enthusiasts. This product line offers a high-tech look that people are willing to pay premiums for!