Humminbird 581i GPS Fishfinder - DF/DB, 2000W, 244m, 5in LCD

Model: 407330-1

Brand, spanking new for 2010 comes the Humminbird 581 GPS Chartplotter and Fishfinder with internal antenna; a unit made so bristling with features, the 581i positively reeks of product differentiation. 

The 581i compiles all the components you've come to love - the quick disconnect mount of the Matrix series, clear, oversized display with the simple interface of Humminbird renown - and combines it with powerful and concise features you couldn't expect to see anywhere else.  All set in the one waterproof unit with an internal 16-channel GPS?  Madness, surely....... But madness done to value perfection.

The Humminbird 581i - the nautical made gloriously simple.

Features:

  • Freeze Frame: pause the graphic sounder display at any time and examine at your leisure; even mark waypoints for your GPS should you wish to return
  • Real Time Sonar Window: sonar returns as-they-happen; shows only what you need to know - bottom, structure and fish - leaving you in control of the whole affair
  • Selective Fish ID: uses different icons to indicate fish size and strength of sonar return, in addition to depth for all targets
  • Sonar Echo Enhancement: shows fish, bait, even vertical jigging onscreen
  • Split Screen Zoom: get a closer look at the finer points of sonar returns without losing sight of the big picture
  • Custom Readout and View Selections: modify the contents of all five readout boxes to display whatever you will
  • Large Readout View: leave the bi-focals at home; sports large, fat digital readouts for temperature speed and triplog information
  • Quick Disconnect Mounting System: work with the same tilt and swivel mount used previously with the Matrix 300, 500 and 700 series
  • Triplog: provides average speed, distance traveled and elapsed time - provided an optional speed accessory is attached
  • Quick Use: X-Press Menu system allows you to view and alter settings with ease
  • Sonar: 200 / 83 kHz dual frequency sonar, penetrates the waves at 20 and 60-degree cone angles for both precision and area coverage; works to 244 metres with 6.35 cm target separation
  • GPS: precision 16-channel receiver with WAAS/EGNOS
  • Alarms: depth, Fish ID, low battery, temperature, off-course, arrival and drift (anchor)
  • Mapping: supports Navionics Gold SD/microSD mapping (not included)

Specs:

  • Dimensions: 178 x 178 x 102 mm [mounted]
  • Display: type - 5" 16-level Grayscale FSTN LCD [backlight], resolution - 640 x 320 px
  • Sounder: frequency - 200 / 83 kHz, angle - 20 / 60 degrees, power - 250 / 2000 W [RMS / peak-to-peak], depth - 244 m / 800 ft / 133 fathoms
  • GPS: type - WAAS 16 Channel GPS, waypoints - 3000, routes - 50, tracks - 50 [20,000 points each]
  • Mapping: supports optional Navionics Gold Maps on SD/microSD card [not included]
  • Mount: quick disconnect
  • Waterproofing: IPX7 [submersible to 1 metre]
  • Water temperature and GPS speed included

Includes:

  • Humminbird 581i [Internal Antenna]
  • Transducer [Dual Frequency]
  • Mounting Bracket [includes Hardware]
  • Power Cable

NOTE: This unit only reads and measures in imperial units.

 

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