Fishfinder 90

Part Number: 010-00459-00


The Fishfinder 90 combines simple operation and Garmin’s exclusive fishfinder technology into an entry-level sonar that's perfect for any vessel where space is at a premium.

Pinpoint Your Next Catch

Fishfinder 90's included dual-beam transducer provides excellent shallow-water performance, and the wide viewing angle lets you see fish even off the sides of the boat. With a clear 2" (5.08 cm) black and white display and bright backlight, the Fishfinder 90 has one of the sharpest screens for the money.

See Fish Clearly

Fishfinder 90 also offers Ultrascroll®, which refreshes the screen with lightning speed so you always see the most up-to-date information. You can manually adjust the gain or set to Auto Gain, which adjusts the level of detail you see automatically.

Other features:

  • Automatic display re-scaling on range change (no more vertical lines with range changes)
  • Power output: 100 W (RMS), 800 W (peak to peak)
  • See-Thru® technology: shows weak and strong returns simultaneously
  • Unit remembers user settings when it is turned off
  • Whiteline shows you how thick the bottom is
  • 2X and 4X automatic and manual zoom
  • Alarms for fish size, shallow water, deep water, low battery
  • Battery voltage indicator


Physical & Performance

Physical dimensions 4.7" x 4.9" x 2.4" (11.9 x 12.4 x 6.1 cm)
Display size, WxH 2.0" x 3.3" (5.0 x 8.4 cm)
Display resolution, WxH 64 x 128 pixels
Display type black and white FSTN
Weight 15.5 oz (439 g)
Water rating IPX7
Audible alarms

Sonar Features & Specifications

Dual-beam (77/200 kHz) sonar capable
Frequencies supported 80/200 kHz (dual beam)
Transmit power 100 W (RMS), 800 W (peak to peak)
Maximum depth 600 ft

Fishfinder Features

Ultrascroll® (displays fish targets at higher boat speeds)
Fish Symbol ID (helps identify fish targets)
AutoGain Technology (minimizes clutter, maximizes targets)
Whiteline (indicates hard or soft bottom)
Water temperature sensor included

In the Box

  • Fishfinder 90
  • Transom-mount transducer with power cable
  • Mounting bracket
  • Owner's manual