Anglers who want to up their fishing game, this portable sonar fish finder is like having underwater eyes! This handy device detects and displays water depth, fish location, fish size, and even bottom composition like weeds, sand, and rocks. The detection range is impressive - from 3 feet down to 328 feet deep with a 45-degree detection angle that gives you good coverage. It comes with a 12-meter cable (about 39 feet) and a detachable sensor float, so you can use it from your kayak, boat, or even ice fishing. The LCD screen is clear and readable even in bright sunlight, plus it has a backlight for night fishing. Features include 5 sensitivity modes, battery save mode, fish alarm that beeps when fish are detected, and the ability to switch between feet and meters. It runs on 4 AAA batteries and gives you 4-5 hours of continuous use, or even longer with battery save mode enabled. Perfect for kayak fishing where space is limited, shore fishing when you want to know what's beneath the surface, or boat fishing as a backup unit. The tossable transducer means you don't need permanent installation - just throw it in the water and start reading. Whether you're fishing lakes, rivers, or ocean, this portable fish finder helps you locate fish faster and understand the underwater environment. Seriously, for the price, it's amazing technology that can dramatically improve your fishing success!