Lucky FF916 WIFI Smart Fish Finder Compatible iOS and Android Portable Sonar Suitable for All Fishing Types 50M wireless operation with 0.6~45M (2~130Ft) depth range and can be connected with 5 wireless devices 12 languages: Russian, German, Dutch, Spanish, French, Japanese, Korean, Hungarian, Portuguese, Polish, English, Chinese Rechargeable battery with 5hours Running time on full charge. Waterproof, fish finder floats on water Displays water depth, water temperature, fish location and depth, and bottom contour or structure Detects both fish location and depth in both fresh and salt water.Best for Boats, Kayak, Rigid, Fishing accessories for ocean, river or lake