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Humminbird 581i Dual Beam Combo Fishfinder

Humminbird 581i Dual Beam Combo Fishfinder
Item# 36979
Regular price: $399.95
Sale price: $359.95
Availability: Usually ships the same business day

Hummingbird 581i Combo Fishfinder / GPS

The Fishfinder 581i Combo shows your position on a chart virtually anywhere you can fish on a built-in UniMap™ and delivers exceptional coverage with DualBeam PLUS sonar in one compact unit.

Humminbird 580 Features:

  • Combination GPS chartplotter and sonar
  • quick disconnect mount
  • Built-in UniMap of the USA coastline, inland lakes and rivers
  • Accurate 16 Channel WAAS GPS receiver built in
  • High Contrast 640V x 320H 5" diagonal display with UltraBlack™ Contrast Enhancement
  • DualBeam PLUS sonar gives you wide coverage and better bottom definition
  • Selectable 20° or 60° beams, or simultaneous operation
  • 2000 Watts Peak-to-Peak, 250 Watt RMS power output
  • Outstanding performance from shallow to 800 feet
  • Sonar Echo Enhancement™ shows a bait when vertical jigging with 2½" target separation
  • Real Time Sonar™ captures the action at up to 40 times a second for better views when moving
  • Upgradable to Navionics® seamless cartography with inland freshwater maps from Navionics HotMaps™ and Marine cartography for blue water use
  • Tilting & Swiveling Quick Disconnect Mounting System makes for easy installation without having to connect cables each time you use this Humminbird Fishfinder 581i combo.
  • Transducer has temperature included
  • GPS speed included
  • Fresh and saltwater set up options for optimal performance in any environment
  • X-Press™ Menus for instant access to most important features with fewer button presses
  • Accelerated Real Time Sonar operates at up to 40 times per second to instantly capture the action under the boat
  • Instant Image Update immediately shows the results of setting changes for the most accurate fine tuning
  • Sonar Echo Enhancement Technology is so sensitive it will track a jig to over 40ft and separate targets within 2 ½ inches
  • Choice of Whiteline™, or Structure ID™ bottom presentation
  • Fully gasketed waterproof design and it floats
  • Selectable large digit screen for easy-to-read number display
  • Backlight for night viewing
  • Microdynamic transducer design slices through water for reliable readings up to 70 mph
  • Totally Automatic Operation or Totally Manual Operation with upper and lower range control
  • One-touch Zoom with 2x, 4x, 6x, and 8x zoom levels
  • Adjustable Chart Speed and Feature Memory retains your settings
  • One-year limited warranty; Assembled in U.S.A.
  • Compatible with Minn Kota US2 (Universal Sonar 2).

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