GPS 125™ Sounder

Part Number: 010-00104-00


The Garmin® GPS 125 Sounder brings a whole new dimension to affordable GPS: a full-featured sonar right on board. Now you can have the power to navigate right to your favorite hotspots and the technology to keep reeling 'em in—without skipping a beat.

Based on the same operating system as the legendary GPS 45XL, the GPS 125 Sounder has all the advanced features you've come to expect from the leader in GPS, including user-selectable highway or compass steering guidance, moving map plotting with dedicated zoom keys, and Garmin's exclusive TracBack® navigation. You'll also get room for 250 waypoints, 20 routes, and one-touch GOTO and Man Overboard (MOB) navigation.

The GPS 125 Sounder is no ordinary fishfinder. With Garmin's exclusive See-Thru® technology and Depth Controlled Gain, you'll always get a clear picture of fish, thermoclines, structure, and bottom hardness—everything you need to land the big one!


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Physical & Performance

Physical dimensions 5.3" x 4.9" x 2.4" (15.6 x 5.1 x 1.23 cm)
Weight 1 lb. (454g)
Antenna External only
NMEA 0183 compatible
Power consumption 5 W max at 10 vDC
Mounting options Bail or Flush
Garmin Marine Network™ ports None

Maps & Memory

Waypoints 250
Routes 20
Track log 768 points

Sonar Features & Specifications

Dual-beam (77/200 kHz) sonar capable
Frequencies supported 200 kHz


NMEA 0183 input ports 1
NMEA 0183 output ports 1
Video input ports None
Video output ports None

In the Box

  • GPS 125 Sounder
  • Bail mount
  • Power/data cable
  • GA-28 low-profileantenna
  • Transom-mount transducer (optional)
  • Owner's manual
  • Quick reference guide


Maps for New Regions

Need maps for other regions? See all maps that are compatible with this device.

Need a map update?

Update the maps that came with your device for the best navigation experience.

Check for Updates