Fishfinder 581i HD DI Combo - SwitchFire Sonar/HumminbirdPC

581i hd di combo. Combine pristine picture quality with features usually found in higher-end models, including side imaging and color or monochrome displays. Versatility makes the 500 series perfect for a wide range of boats. It doesn't matter what you're fishing for-any humminbird fish finder will help you see your prey and its surroundings more clearly. To find the humminbird that's right for you, consider your boat type, fishing style, price range and the features you can or can't live without. Use the chart below to select the series that best meets your needs. Display size: 5'' inches diagonal. Resolution: 640 volts x 320 hertz. Display type: fstn lcd. Sonar - standard: dual beam plus. Sonar coverage: 16 degrees, 28 degrees,45 degrees & 75 degrees @ -10 db. Sonar frequency: 455/800/200/455 kilohertz. Target separation: 2.5'' inches. Power output (max): -300 watts (rms) -2400 watts (ptp). Depth capability: 800' feet. Temperature: included. Speed: gps speed included. Mount: quick disconnect. Power input: 10-20 vdc. Other features include: switchfire sonar. Humminbirdpc. Upgradeable internal software. Split screen zoom. Split screen bottom lock. 3d chart view. Large digits view. Wide/narrow cone split screen. Custom view selections. Custom digital readout selections. Selectable display colors. Instant image update. Selective fish id+. Real time sonar. Sonar echo enhancement. Triplog. X-press. Menu system. Manufacturer: humminbird. Basemap = yes. Card format = sd. Cartography - preloaded = no. Cartography brand = navionics. Cartography type = platinum/gold/silver. Frequency = 455/800/200/455. Included transducer = xnt-9-di-t. Internal/external antenna = internal. Resolution (vxh) = 640 x 320. Screen size = 5'' diagonal. Screen type = grayscale. Speed/temp = temp only. Touchscreen = no. Transducer type = transom mount. Waterproof rating = waterproof. Watts rms - max = 300. Waypoints/routes = 2,500/50. Weather capable = none.