LUCKY 2 in 1 Wired 100M Depth Transducer, Wireless 40M Sonar Sensor Fish Finder Fishfinder, Bottom Contour Display with Zoom Function, Alarm, 8-LED Backlight for Boats, Rig, Kayak Ocean,River Wired Transducer: Depth Capability/Range 100m (328ft); Operating Frequency 200kHz; Coverage 45 degrees beam angle; Built-in Temperature sensor Transducer Cable Lengt 8m (26ft) Wireless Sonar Sensor: Depth Capability/Range 0.6 ~ 40m (2 ~ 131Ft); Operating Frequency 125kHz; Coverage 90 degrees beam angle; Built-in Temperature sensor Operation Range 70m (210ft); Power Supply 1 x 3V CR2032 Button Cell Battery (included) 2-in-1 Wired Transducer w/ 45 beam angle & Wireless Sensor w/ 90 beam angle; Can be used as a fish finder and a depth sounder; Built-in Water Temperature Sensor for both Transducer Sonar & Wireless Sensor; Fully waterproof design (wireless sensor) Wireless sensor signal strength indicator w/ alarm when signal has been cut off; Sensivity indicator for wired transducer; Wireless sensor automatically shutdown when out wet area or out of water; Battery strength indicator and Power save mode Fish Icon Display: Large, medium and small fish symbols (3 fish size display) / Option to view raw sonar returns (arch) or clear fish icons with fish depth location; Adjustable Sonar Sensivity setting, Contrast setting, Depth Range Setting