Features: Wireless, clear colorful LCD screen, suitable for the lake, river, sea, and another fishery environment. It detects and displays water depth, water temperature, fish size, bottom contour. 2 mode, demonstration mode, and normal mode. Sound transmission beam angle: 105 degrees. Depth range: 0.6-50M. Wireless range: 180m (max). Easy to use, tether the sensor with a fishing line and cast it onto the water. More precise, more functional. Any problem, please contact our store without hesitation. Honor to serve you!