Garmin T5 & T5 Mini Collar Review: GPS Dog Collars


The Garmin T5 Collar is one of the collars you can use with some of Garmin’s handheld devices for dog GPS tracking and locating.

In this Garmin T5 Review where we also review the T5 Mini, we outline what the main features, along with pros and cons of these T5 collars are.

The T5 and T5 Mini in particular are tracking only collars, compared to say the TT15 and TT15 Mini which are both a tracking and training collar.

Let’s take a look at who and what the T5 and T5 Mini might be for in more detail!


(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 T5 & T5 Mini Collar Review: GPS Dog Collars

If you want to go straight to viewing the T5 & T5 Mini, you can do so here:


Garmin T5: Review

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A tracking only dog collar device

Comes in 2 versions – the regular T5 and the T5 Mini

The T5 and T5 Mini have slightly different features in some regards, but are for the most part similar. You can find the full list of differences below in the buyer’s guide

In terms of compatibility – the T5 is only compatible with the Astro® 320, Astro 430 and the Alpha® 100. The T5 can be configured for operation with either handheld but cannot be tracked simultaneously by both the Astro 320 and Astro 430.

The collar has LED beacon lights you can activate with the Astro 100 – these lights allow you to see your dog up to 100 yards away in darker conditions

Has a top-mounted, high-sensitivity GPS/GLONASS receiver

The collar is water resistant up to 32 feet

You can add multiple collars for multiple dogs to the handhelds like the Astro for example



Collars are expensive

If you live outside the US, ask Garmin first if there will be any issues with the tracking signal or tracking information




Garmin T5: Buyer’s Guide

What Is The Garmin T5 Designed For?

The T5 is designed for tracking only. It is not a training collar.


Who Might The Garmin T5 Be For?

People who want an advanced dog tracking collar

People using the Astro® 320, Astro 430 and the Alpha® 100 handhelds


Who Might The Garmin T5 NOT Be For?

People who want a training collar/e collar with static, vibration and tone training modes for example

People NOT using the Astro® 320, Astro 430 and the Alpha® 100 handhelds


What Do You Get In The Garmin T5 Kit?

T 5 dog device with rechargeable lithium-ion battery (or a Mini dog collar device with the T5 Mini)

Collar strap

Charging clip

AC adapter

Vehicle power cable



Garmin T5 vs T5 Mini: Differences, and Similarities

These are some of the main differences and similarities between the T5 and the T5 Mini:


The unit dimensions (WxHxD) of the T5 are 3.5″ x 1.75” x 1.85″, whilst the Mini is 3.1″ x 1.8” x 1.4” 

The total weight of the T5 with the collar is 9.3 oz, whilst the total weight of the T5 Mini is 7.0 oz with the collar

The estimated battery life of the T5 is 20-40 hours, whilst the estimated battery life of the T5 Mini is 16-30 hours

The range from the collar to the handheld for the T5 is 9 miles, whilst the range for the T5 Mini is 4 miles

The T5 has a 1 inch thick collar strap, whilst the T5 Mini has a 3/4 inch thick collar strap



Both have rechargeable lithium ion batteries

Both have a USB interface

Both are water resistant to 32 feet – 1 ATM water rating

Both will fit a minimum of a 9.5 inch circumference neck size

Both have LED beacon lights

Both are tracking only collars, and do not include static, vibration or tone training options

Both have rescue mode – when the battery hits 25%, the frequency the collar updates the handheld slows down to conserve the battery

Both have replaceable collar straps

Both are compatible with the same handhelds – only compatible with the Astro® 320, Astro 430 and the Alpha® 100. Can be configured for operation with either handheld, but cannot be tracked simultaneously by both the Astro 320 and Astro 430


Best Trackers & GPS Collars For Dogs

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



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