5 Inch vs 9 Inch Fish Finders: Which Should You Buy?
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Choosing between a 5 Inch vs 9 Inch fish finder depends on your boat space and sonar needs. Both units provide essential sonar data to locate fish. The main difference is screen real estate. The smaller unit fits tight consoles. The larger unit shows more detail at once. You must decide if clarity or compactness matters more for your fishing style. This comparison looks at the specs to help you pick the right tool for your kayak or small boat.
Key differences
| Aspect | Garmin Striker 4 GPS Fish Finder with Transducer | Lowrance Eagle 9 TripleShot HD |
|---|---|---|
| Display Size | 3.5 inches diagonal | 9 inches |
| Sonar Technology | CHIRP and ClearVü scanning | TripleShot HD (SideScan, DownScan, CHIRP) |
| Mapping | Waypoint map | C-MAP Discover microSD card |
| Weight | 8 ounces | 2 pounds |
| Control Interface | Keyed interface with dedicated buttons | IPS screen |
Which one should you choose?
Choose Garmin Striker 4 GPS Fish Finder with Transducer if
- You need a lightweight unit that weighs under one pound for easy mounting.
- You prefer a simple interface with dedicated buttons for quick operation.
- You only need basic CHIRP and scanning sonar without side imaging.
Choose Lowrance Eagle 9 TripleShot HD if
- You want a large 9-inch screen to see side imaging and structure details.
- You need pre-loaded C-MAP charts for inland and coastal waters.
- You want one transducer to provide SideScan, DownScan, and CHIRP data.
Verdict: The Garmin Striker 4 is the better choice for anglers who prioritize lightweight simplicity and basic sonar performance. The Lowrance Eagle 9 is ideal for those who need a large display and advanced side imaging capabilities. Your decision should rest on whether you value screen size and mapping features over compactness.
5 Inch vs 9 Inch Fish Finder Specs
Display Size
The Garmin Striker 4 features a 3.5-inch diagonal display, while the Lowrance Eagle 9 offers a 9-inch IPS screen. This difference in screen real estate is significant for readability. A 9-inch screen provides more room to display SideScan, sonar, structure, and chart details simultaneously. The smaller 3.5-inch screen is compact but offers less visual space. You must choose between the detailed imagery possible on the larger IPS panel or the minimal footprint of the smaller unit. The larger screen generally makes it easier to interpret complex sonar data without squinting.
Sonar Technology
Sonar capabilities differ between the two units. The Garmin Striker 4 uses CHIRP and ClearVü scanning sonar. ClearVü provides near photographic images of objects and structure below the boat. CHIRP offers better target separation and crisper fish arches. The Lowrance Eagle 9 utilizes TripleShot HD technology. This combines SideScan, DownScan Imaging, and CHIRP sonar through a single transducer. SideScan allows you to search beside the boat, not just below. FishReveal overlays CHIRP targets on DownScan detail. This gives you a more comprehensive view of the water column and surrounding structure compared to the Garmin's downward-focused scanning.
Mapping and Charting
Navigation features vary significantly. The Garmin Striker 4 includes a waypoint map. You can view, mark, and navigate to specific locations like brush piles or docks. It does not include pre-loaded topographic charts. The Lowrance Eagle 9 comes with a C-MAP Discover microSD card. This provides extensive inland and coastal chart coverage across the U.S. and Canada. If you need detailed topographic maps for navigation, the Lowrance offers a clear advantage. The Garmin relies on your own waypoint marking for navigation without built-in chart data.
Physical Dimensions
Size and weight are critical for small boats. The Garmin Striker 4 is significantly smaller and lighter. It weighs 8 ounces and measures 1.6 inches wide, 3.6 inches long, and 5.9 inches high. The Lowrance Eagle 9 weighs 2 pounds. Its dimensions are 3.54 inches wide, 11.3 inches long, and 6.39 inches high. The Garmin is much easier to mount in tight spaces. The Lowrance requires more console space due to its larger screen and heavier build. If you have limited mounting area, the Garmin is the practical choice.
Control Interface
The control methods differ based on screen technology. The Garmin Striker 4 uses a keyed interface with dedicated buttons. This design is simple and easy to use, especially with wet hands or gloves. It is straightforward for basic operation. The Lowrance Eagle 9 features an IPS screen with touch capabilities implied by the interface type, though specific button details are less emphasized than the screen quality. The Garmin’s physical buttons offer tactile feedback. The Lowrance relies on the large screen for interaction. Your preference for physical buttons versus a large visual interface will dictate the better control experience for you.
Which Fish Finder Suits Your Boat
Anglers needing simple, portable sonar
The Garmin Striker 4 weighs just 8 ounces and features a 3.5-inch diagonal display. Its keyed interface offers dedicated buttons for easy use. This unit includes a built-in flasher ideal for vertical jigging or ice fishing. The IPX7 water rating ensures durability in wet conditions. You get Chirp sonar for crisp fish arches without complex setup.
Users wanting detailed side and down imaging
The Lowrance Eagle 9 uses a 9-inch IPS screen to display SideScan, DownScan, and CHIRP sonar simultaneously. TripleShot HD technology combines these views through one transducer. FishReveal overlays targets on structure details for clearer identification. The large screen provides ample room to see fish near structure. You benefit from expanded visibility in both fresh and saltwater environments.
Boaters requiring integrated chart plotting
This unit includes a C-MAP Discover microSD card with inland and coastal chart coverage. The 9-inch screen displays chart details alongside sonar data. You can navigate to locations using the integrated mapping system. The twist-lock connector supports quick installation. The larger display allows you to see more chart information while monitoring sonar readings simultaneously.
Quick picks
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | Garmin Striker 4 GPS Fish Finder with Transducer | small boats and kayaks needing basic sonar | Check price of Garmin Striker 4 GPS Fish Finder with Transducer on Amazon |
| 2 | Lowrance Eagle 9 TripleShot HD | Kayakers needing large 9-inch sonar and chart detail | Check price of Lowrance Eagle 9 TripleShot HD on Amazon |
The products compared
Garmin Striker 4 GPS Fish Finder with Transducer
Best for: small boats and kayaks needing basic sonar
- Display Size
- 5 Inch (what this guide is about)
- Sonar Type
- CHIRP, ClearVü scanning
- GPS
- Waypoint map
- Mount Type
- Keyed interface, built-in flasher
- Max Depth
- 1,600 ft freshwater, 750 ft saltwater
- Control
- Keyed interface with dedicated buttons
View on Amazon: Garmin Striker 4 GPS Fish Finder with Transducer Affiliate link
The Garmin Striker 4 offers a 3.5-inch diagonal display with CHIRP and ClearVü sonar. It includes a built-in waypoint map and a keyed interface for simple operation. This unit weighs 8 ounces and features an IPX7 water rating. It is suitable for freshwater and saltwater use, including ice fishing. The compact size makes it a practical option for smaller boats or kayaks where screen real estate is limited.
Pros
- CHIRP sonar for crisper fish arches
- ClearVü scanning for detailed structure images
- Built-in waypoint map for navigation
- IPX7 water rating for durability
Cons
- 3.5-inch display is smaller than the 5-inch and 9-inch options
- Keyed interface lacks touchscreen convenience
- Max depth is limited to 1,600 feet in freshwater
Good fit if
- You prefer a compact, lightweight unit for small boats
- You want simple, dedicated button controls
- You need basic CHIRP sonar and GPS waypoint mapping
Skip if
- You require a large screen for better visibility
- You prefer touchscreen operation over physical buttons
- You need advanced mapping or high-resolution imaging
Verdict: Garmin Striker 4 3.5" GPS Fishfinder is a compact, straightforward fishfinder for anglers who prioritize portability and ease of use over large display sizes. It fits well in kayaks or small boats where space is tight.
Lowrance Eagle 9 TripleShot HD
Best for: Kayakers needing large 9-inch sonar and chart detail
- Display Size
- 9 Inch (what this guide is about)
- Sonar Type
- CHIRP, SideScan, DownScan
- Transducer
- TripleShot HD
- Mapping
- C-MAP DISCOVER
- Color
- Black
- Dimensions
- 11.3 × 3.54 × 6.39 inches
View on Amazon: Lowrance Eagle 9 TripleShot HD Affiliate link
This 9-inch fish finder features an IPS screen for clear visibility. It uses TripleShot HD sonar to provide SideScan, DownScan, and CHIRP data through a single transducer. The unit includes a C-MAP Discover microSD card for U.S. and Canada chart coverage. It suits anglers who want detailed structure and fish targets on a large display. The twist-lock connector allows for quick installation on your kayak.
Pros
- 9-inch IPS display shows SideScan, sonar, and chart details clearly.
- TripleShot HD transducer combines SideScan, DownScan, and CHIRP sonar.
- Includes C-MAP Discover microSD card for inland and coastal mapping.
- FishReveal overlays CHIRP targets on DownScan for better identification.
Cons
- 9-inch size requires more dashboard space than smaller units.
- Chart coverage limited to U.S. and Canada inland and coastal areas.
- Requires microSD card for mapping functionality.
Good fit if
- You need a large screen to see detailed sonar returns.
- You want SideScan and DownScan from one transducer.
- You fish in U.S. or Canadian inland and coastal waters.
Skip if
- You prefer a compact 5-inch display for limited space.
- You need global chart coverage beyond North America.
- You want a smaller footprint for tight kayak layouts.
Verdict: Lowrance Eagle 9 TripleShot HD offers a large 9-inch view with comprehensive sonar and mapping. It fits kayakers who prioritize detailed structure imaging and have space for a bigger screen.
Specifications side by side
| Spec | Garmin Striker 4 GPS Fish Finder with Transducer | Lowrance Eagle 9 TripleShot HD |
|---|---|---|
| Display Size | 3.5 inches diagonal | 9-inch |
| Sonar Type | CHIRP, ClearVü scanning | CHIRP, SideScan, DownScan |
| Transducer | not stated | TripleShot HD |
| GPS | Waypoint map | not stated |
| Mapping | not stated | C-MAP DISCOVER |
| Mount Type | Keyed interface, built-in flasher | not stated |
| Max Depth | 1,600 ft freshwater, 750 ft saltwater | not stated |
| Control | Keyed interface with dedicated buttons | not stated |
| Water Type | Freshwater, saltwater, ice fishing | not stated |
| Capacity | Single | not stated |
| Color | Black | Black |
| Dimensions | 3.6 × 1.6 × 5.9 inches | 11.3 × 3.54 × 6.39 inches |
| Weight | 8 ounces | 2 pounds |
| Size | 3.5 | 9 Inch |
| Model | 010-01550-00 | 000-16229-001 |
Frequently asked questions
Is a 5 inch fish finder good for kayaks?
Yes, a 5 inch unit is ideal for kayaks. The Garmin Striker 4 weighs only 8 ounces and measures 3.6 inches long. Its compact size fits tight spaces. It includes a transducer for CHIRP sonar. This makes it easy to mount on small boats without taking up room.
Can a 9 inch fish finder fit in a kayak?
It depends on your console space. The Lowrance Eagle 9 is 11.3 inches long and weighs 2 pounds. It offers a large 9-inch display for detailed structure imaging. You need ample space to mount it securely. It suits kayakers who prioritize screen detail over portability.
Does a larger screen help with reading sonar data?
A larger screen provides more room for data. The 9-inch Lowrance unit shows comprehensive sonar and mapping. This helps you see more detail in the water column. The smaller 5-inch Garmin unit is simpler. It focuses on basic sonar and GPS without cluttering your view.
Which fish finder is lighter to carry?
The 5-inch model is significantly lighter. The Garmin Striker 4 weighs just 8 ounces. The 9-inch Lowrance model weighs 2 pounds. If you carry your gear often, the lighter unit is easier to handle. It also has a smaller physical footprint for storage.
Do 5 inch units include GPS?
Yes, the Garmin Striker 4 includes GPS. It is a GPS fish finder with built-in mapping. This helps you mark spots and navigate. The Lowrance Eagle 9 also offers chart detail. Both units provide navigation aids, but the 5-inch model is designed for basic GPS use.
Is CHIRP sonar available on 5 inch displays?
Yes, the Garmin Striker 4 features CHIRP sonar. This technology provides better target separation and imaging. It is included with the transducer. The larger 9-inch unit also offers advanced sonar. Both sizes can provide high-quality sonar data for locating fish.