1、This portable fish finders detects and shows fish location with water depth, short and tall weeds, sand and rocks. 2、The color LCD display of the fish finder is visible under sunshine. Backlight enable the fishing sonar for night fishing. 3、Five assistant settings are available on this portable fish finders. Adjustable sensitivity, battery save mode, backlight mode, fish and fish school alarm and battery indicator. 4、The portable fish finders works with wired transducer with a 25ft cable wire. The depth unit can be switched from M to FT if long press enter button for 5 seconds. 5、The detecting depth range of the fishing sonar is from 3ft(1m) to 328ft (100m) with 45°detecting degree. 6、This portable depth finder uses 4 x AAA batteries(Not included). Normally this fish finders for kayaks can continue working for 4‑5hours with new batteries. 7、Multifunction, you can use this portable depth finder for various fishing occasion like boat fishing, kayak fishing, sea fishing, ice fishing and so on. Item Type: Fish Finder Material: Plastic Color: As shown in the picture Weight: Approx.549g/19.4oz Display: 2inch TN/ANTI-UV LCD Backlight: White LED Depth Capability: 328feet(100m) Power Supply: 4 x AAA alkaline batteries (not included) Waterproof Design: Level-4 (spray-water-proof) Show water depth, fish location, and bottom grass & rock User selectable sensitivity,depth units, and fish alarm setting Operating Temperature: -4℉ to 158℉(-20℃ to 70℃) 1 x Fish Finder Host(Battery Not Included) 1 x Transducer(Transducer+Floating Foam+Cable) 1 x Screw 1 x Lanyard 1 x Instruction Manual