Garmin Astro 320 vs Astro 430: Comparison


When comparing the Garmin Astro 320 vs the Astro 430, it’s good to know the similarities and differences.

You want to know what exactly you’re getting.

That’s what we put this comparison guide together for – so you can see what each of these Garmin GPS tracking handhelds offer, so you can decide which is better for you and your dog/s.

Let’s check them out!


(NOTE: this is a general information guide only, and is not professional advice, or a substitute for professional advice. A qualified vet or animal expert is the only person qualified to give you expert advice in regards to your pet/s)

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Garmin Astro 320 vs Astro 430 Comparison: Differences, Similarities

You can go straight to checking out each of the handhelds here:

Astro 430


Astro 320


Garmin Astro 320 vs Astro 430: Which Is Better?

Simply put, the Astro 430 is the more advanced version of the 320 with a lot more features that allows you to do a lot more. 

You can also fit up to 20 dogs on the 430 as opposed to the 320 which allows only 10 dogs.

It’s best to look over exactly the extra features you’re getting with the 430 (you can see the main ones below), compare the prices, and see if the extras the 430 offers are worth it for you.


Garmin Astro 320 vs Astro 430: Differences

Some of the main differences between the two are:

The 430 can support up to 20 total dogs/collar devices, whilst the 320 can only support 10

The 430 gives you the TOPO U.S. 100K maps, whereas the 320 only gives you the worldwide basemap which is less expansive and detailed

The 430 has Geofences, whereas the 320 doesn’t

The 430 allows ‘Treed’ and ‘On Point’ notifications, whereas the 320 doesn’t

The 430 is compatible with the Garmin DriveTrack 70LMT, whereas the 320 isn’t

The 430 can work with either rechargeable NiMH pack batteries or 2 x AA batteries, whereas the 320 only takes 2 x AA batteries

The 430 has a memory/history of 4.0GB, whereas the 320 has a memory/history of 1.7GB


Garmin Astro 320 vs Astro 430: Similarities

Some of the main similarities between the two are:

They are both tracking only handhelds that operate with GPS+GLONASS

They both do not have training capabilities (static, sound or vibrate training options)

They are both compatible with the T5 and TT15 collar devices

They both allow you to see where your dog has been, where they are, what direction they are heading in, dog specific information, and zoom maps with all, some or none of your dogs displayed on the map

They both update every 2.5 seconds

They have the same physical dimensions and weight

They weigh the same weight 

Both water rated to IPX7

They have the same size and resolution of screen

Both have a USD interface

Both have storage capacity with a microSD card

Both give you up to 2000 waypoints

Both give you up to 200 routes

For the track log, you get 10,000 points, and 200 saved tracks

Has a Barometric altimeter

Has a tilt-compensated 3-axis compass

Both have ability for area calculation

Both have ability for automatic routing (turn by turn routing on roads)

Both have ability for geo caching

Both have ability to add custom maps

Both have a Hunt/fish calendar, and sun and moon information

Both run on a MURS frequency band


Garmin Astro 320 vs Astro 430: Reviews

For more information on both handhelds, you can check out these individual reviews:

Garmin Astro 320 Review

Garmin Astro 430 Review


For complete information on compatibility and Garmin add on programs and devices, check out Garmin’s site.


Best Trackers & GPS Collars For Dogs

Read more about some of the best trackers and GPS dog collars for dogs in this guide.


Best Remote Dog Training Collars

You can read more about the best remote dog training collars in this guide.



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