Fish Finders Docooler Portable Color LCD Fish Finder Wireless Sonar Sensor Transducer Fishfinder Fish Alarm Depth Locator Fishing Equipment with LED Backlight This portable wireless fish finder is designed for both professional and amateur anglers to find out fish location and water depth. It can be used in sea, river or lake, etc. With innovative technology, this portable fish finder is a perfect tool to bring the fish to you Features: 2.8" TFT LCD display with LED backlight easy reading at night or under weak light, backlight brightness is adjustable according to different needs. Detect and display fish location and water depth. Detecting depth up to 45m (148ft). Water bottom contour and water temperature indicator. Audible fish and depth alarm. Clear fish icon display. 20-level sensitivity settings available, higher-degree sensitivity can help you get more accurate chances to detect the fish. Update the detected underwater information in time, which improves detecting accuracy and fishing success. With round wireless sonar sensor, wireless operation range reaches 100m (328ft). 90 degree sonar coverage and 125KHz sonar frequency. Quick manual zoom for bottom tracking, convenient to use. With simulation mode to help beginners to learn and use the fish finder. Compact portable design, great for river, lake, ocean fishing and other fishing environments. Specifications: Display: 2.8" TFT LCD Detecting Depth: 45m / 148ft Sonar Coverage: 90 degrees Sonar Frequency: 125KHz Wireless Range: 100m / 328ft Sensor Power Supply: Built-in 3.7V lithium battery Operation Temperature: -10~+50°C Item Size: 12.5 * 7.2 * 2.7cm / 4.92 * 2.83 * 1.06in Item Weight: 148g / 5.11oz Package Size: 24.4 * 10 * 7.5cm / 9.61 * 3.94 * 2.95in Package Weight: 424g / 14.96oz Package List: 1 * Fish Finder 1 * Sonar Sensor 1 * Antenna 1 * Lanyard 1 * Charging Cable 1 * User Manual (English)