The fish finder contains two sonars. You can cast wireless sonar to the area you want to detect. You can freely use the right sonar depending on the different situations. The wired transducer detects widely and accurately. The 90 degrees beam angle is 125Khz (Wireless mode), 45 degrees beam angle is 200Khz (Cable transducer mode). The wireless sonar can be thrown out. The float on the wired transducer can make sure the transducer is more steady to get more accurate results on sea or lake. The detection range of the wired mode is from 2.3ft to 328ft. You can use it in various environments. The portable depth finder could be widely used on various occasions such as a bank, ice fishing, lake, sea boat shore fishing, and so on. Because of the advanced sonar, you can know water depth, approx. fish location, fishes size (small, middle, big), water temperature, bottom contour, and so on. The hand unit of this water depth finder is rechargeable, you can use the charging cable that comes with the package to charge it. The battery can continue work when be fully charged. It will perform well in kinds of different areas, both suitable for saltwater and freshwater. Choose this as a gift to your family or friends, they will thank your ideas because of its excellent performance. SPECIFICATIONS: Display: 2.4inch TFT color LCD Backlighting: On/off White LED Wireless operational Range: 328feet(100m) Power: 3.7V rechargeable lithium batteries Waterproof design: level-4(spray-water-proof) Wireless Sensor battery requirements: one replaceable CR2032 battery Depth Capability: 147feet(45m) (Wireless mode), 328feet(100m) (Cable transducer mode) Sonar Coverage: 90 degrees beam angle in 125Khz (Wireless mode), 45 degrees beam angle in 200Khz (Cable transducer mode) Operational Temperature: 14degF to 122degF (-10degC to 50degC)
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