Product parameters: Material: plastic Sonar: wireless 125 kHz Wireless power consumption: 0,1 W Depth range: 2-120 feet / 0,6-45 m Wireless range: 100m Sound frequency: 125 kHz Sonar beam angle: 90 degrees RF: 433,92 MHz List of things to pack: 1 x Wireless Remote Control Sonar Sensor 1 x Wireless Receiver Host 1 x Charging Cable 1 x Connecting Rope 1 x Antenna Wireless sonar with a range of 100 m with sonar sensor for fishing boat with bait. You can access all the data you need on a specific screen: including sea depth, fish condition and more Thanks to the backlight design, it is clearly visible at night. The main unit runs on 4 AAA batteries (batteries not included) and the sensors can be charged using a charging cable. This is the perfect tool for outdoor fishing. Suitable for fishing in areas such as lakes, rivers and oceans. Real photos shared by our customers.