☀ The portable fish finder, with updated 2.4inch TFT color LCD screen(more clear to display), can detect and display underwater contour, water depth, water temperature and fish size(big/middle/small) and fish depth. It has two user modes: TRANSDUCER/SIMULATION. Try all functions in simulation mode and go fishing in transducer mode. ☀ Fish finder portable provides you 26FT wired operating distance and 328FT depth detection. Kayak fish finders has 45° beam angle with 200Khz in detection. ☀ The fish finder portable is rechargeable. Come with USB cable for charging. The fish depth finder can work continuously about 5 hours with full charge. The brightness of the display can be adjusted. Read the data either at night or in the sunlight easily. ☀ Various features settings: Portable fish finder is with updated underwater contour display(3 kinds of display. You can choose, more clear and professional). Also, set up sensitivity, screen brightness, depth range, zoom, depth alarm, fish alarm, fish icon, units(FT/M ℃/℉)alter and language by yourself. ☀ Go fishing with the fish depth finder in different ways, such as ice fishing, river fishing, sea fishing, shore fishing, kayak fishing, etc. The bracket allows you to attach the sensor transducer to your boat or kayak. Fish finder portable is a good assistant for sea fishing, ice fishing, shore fishing, etc. Fish alarm, water depth, fish depth finder and other details shown on the screen can satisfy your demands in fishing. Go fishing with portable fish finders and you will have fun in it! Underwater contour display: The portable fish finder has 3 colors display modes to show underwater contour display, blue, red and gray. It is clear and professional. Sensitivity Adjustment : It controls how many details are shown on the display. You can set up the sensitivity from 1 to 10. We recommend you to choose lower sensitivity if fishing in clear water. Fish alarm : The kayak fish finders alerts you when it detects fish or fish schools by alarm setting. It can distinguish the relative fish size and shows in large, middle and small icon on the screen. Measurement Unit : You can choose four different units from the menu--M/℃, FT/℃, M/℉, FT/℉. Multi –ways to use portable fish finder: Attach the adapter to the fishing boat hull by the mounting tabs. Fix the transducer against the hull bottom 1 inch underwater. Make sure the moving speed is lower than 5mph. Cast the sonar transducer as far as you can, and use the fish finder portable in ice fishing, river fishing, sea fishing, kayak fishing, shore fishing and so on. Specifications: Display:2.4inch TFT color LCD, pixels:240Vx960H Depth Capability:328feet(100m) Sonar Coverage:45 degrees beam angle in 200Khz Power:3.7V rechargeable lithium batteries Waterproof design:level-4(spray-water-proof) Operational Temperature:14°F to 122°F(-10°C to 50°C).