Fish Finders descriptions We use high-quality raw materials, all materials are very suitable for the product, please rest assured to buy. Sonar Sensor Fish Finder With Wireless Transducer Remote Control Fishing Tools. Features: D Refers to Depth, D+T Refers to Depth And Temerature. D Transducer is for Basic Style--FFW1108-1,FFCW1108-1 D+T Transducer Is for Most Fish Finder, Such As FFW718, FF518. Specifications: Sonar Frequency: Wireless: 125Khz Detecting Range: 0.6-73 Meter Sonar Coverage: 90 Degrees in 125Khz Power Input: AAA Fit For: Fisherman Fish Finder Sonar Beam Angle: 90 Degrees Sonar Frequency: 125Khz Item Name: Wireless Transducer Type: Wireless Fish Finder and Wired Fish Finder Sonar Waterproof Design: Level-4 (spray-water-proof) Use Fishfinder: Ffw718/ff518/ff718lic and So On Power Requirement: One CR-2032 Cell Battery Package Includes: Sonar Transducer*1Pcs . Products number : SOMONO81729