Features: 1Uses wireless sensor, you can cast it out on the water, the placing location is flexible. 2Uses echoes sound to detect fish, fit for sea fishing, river fishing, lake fishing and ice fishing, etc. 3Compact and lightweight, a practical and portable tool to use, convenient to carry. 4You can adjust the sensitivity settings, then the device can detect and distinguish the small fish and big fish. 5With it to easily detect the fish, and you don't need to always watch the fishing buoy. Condition: 100% Brand New Item Type: Fish Finder Material: Plasatic Color: Black Red Depth Range: Approx. 2-148ft / 0.6-36m Wireless Working Range: Approx. 100m/328.1ft Sonar Frequency: 125KHZ Sonar Beam Angle: 90 Degrees RF: 433.92 Mhz Working Temperature: -20-70 Host Battery: 4 x AAA Battery (Not Included) Sensor Battery: Polymer Battery 3.7V (Included) Package Included: 1 x Host1 x Sensor1 x Charging Cable1 x Antenna1 x Rope1 x Manual