Feature 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 NewItem Type: Fish FinderMaterial: PlasaticColor: Black + RedDepth Range: Approx. 2-148ft / 0.6-36mWireless Working Range: Approx. 100m/328.1ftSonar Frequency: 125KHZSonar Beam Angle: 90 DegreesRF: 433.92 MhzWorking Temperature: -20-70Host Battery: 4 x AAA Battery (Not Included)Sensor Battery: Polymer Battery 3.7V (Included) .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Host1 x Sensor1 x Charging Cable1 x Antenna1 x Rope1 x Manual