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$379.99

Strap Color: OR| OrangeBK| BlackRD| RedBL| BlueGN| GreenPK| PinkYW| YellowWH| WhiteVI| VioletSV| Silver

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Code: TT25EXT

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• Extended-life battery gives up to 136 hours runtime using dynamic tracking
• Dynamic Tracking auto-adjusts the collar update rate based on your dog's activity (less movement=lower update rate) to extend the battery life to approx. 68 hours on a single charge
• Multi-colored remotely activated LED light beacons let you easily ID your dogs in low light conditions with 7 color options: white, yellow, magenta, cyan, green, red, and blue
• User-replaceable flex band reduces downtime if your collar gets damaged
• Multi-colored collar status indicator
  • Blue: pairing mode
  • Yellow: acquiring GPS signal
  • Green: GPS signal established
  • Red: low battery
• WiFi connectivity allows collar software to auto-update while charging
• "One-size-fits-most" collar design can be comfortably worn by both small and large dogs
• Remotely activated Sleep Mode further extends battery life (only with Alpha handhelds)
• Waterproof (1 ATM -- 10 meters)
• Top-mounted, high-sensitivity GPS / Galileo receiver gives better signal reception than GPS alone
• VIRB control on the collar lets you start or stop VIRB video recording with the Alpha handheld (VIRB camera not included)
• 18 levels of both continuous and momentary stimulation
• Non-stimulating vibration function
• Non-stimulating tone function
• User-replaceable 1" collar strap fits neck sizes between 11.5" and 21"
• 22 1/2" long-range braided steel collar antenna takes all the abuse a hunting dog can give it
• USB-C port on collar for manual software updates via Garmin Express and exporting additional GPS dog data

• Dimensions: 1.75" H x 3.2" W x 1.8" D
• Weight: 10.4 oz. with collar strap and antenna

• ALPHA 300i / 300 / 200i / 200 / 100 / 10
• PRO 550 PLUS (limited to 2.5-second update rate only, default beacon light color)
• ASTRO 430 (tracking function only)
• NOT compatible with Astro 320 or 220 handhelds

• Up to 136 hours using dynamic tracking (default)
• Up to 50 hours with location updates every 2.5 seconds
• Up to 168 hours with location updates every 2 minutes

• Steel braided antenna
• USB-C cable
• Collar charging clip
• Short and long contact point sets with wrench
• Owner's manual
• 1-year Garmin warranty

How to Assemble your TT25 EXT

How to Pair Additional Garmin Collars to Your Alpha

3. Select Pair Collar, and follow the on-screen instructions.


4. After successfully adding the dog collar device, enter the name of the dog, and select check mark.


5. Select a beacon color for this dog collar device, and select finish.

---

How to Pair Additional Garmin Collars to Your PRO 550 PLUS

Please read all steps before starting.


1. Charge the new receiver for two hours and install the desired color collar strap.


2. Turn on the handheld device.


3. Select a color with the toggle switch. The dog collar device will be assigned to this color.


4. Turn the intensity dial to N.


5. Press the green tone button.


6. Press the top training button.


7. Follow the on-screen instructions to select pair collar.



8. Follow the on-screen instructions to select auto, tree, or point for the type of dog wearing the collar.


9. The handheld device is now ready to pair. You can cancel pairing by pressing the green tone button.


10. If the dog collar device is on, turn it off.


11. Hold the power button on the dog collar device until the device emits two series of beeps (about 2 seconds), and then release the power button. The status LED flashes blue. The dog collar device is now ready to be paired with a handheld.


12. The handheld device will vibrate and a check mark will appear on the screen when the devices have paired successfully.

NOTE: GPS signals must be established on both devices before the handheld device displays the dog collar device battery status, distance, and direction.

Owner's Manual for Garmin TT25 EXT Collar

Steve Says: Garmin TT25 EXT Collar

Let's talk about what's new in the new Alpha series of collars. We have two new collars: the T20, which is a tracking-only collar, and the TT25, which is both a tracking and training collar.

There are several new features in these new collars, the first one being dynamic updates. In previous generations of collars, update rates were set to a standard set time. The new collars have standard set update rates, but they also offer the option of a dynamic update rate. In an effort to conserve battery life, the dynamic update rate will decrease the frequency of updates to the handheld when the dog is motionless. This extends the battery life, giving you up to 68 hours of battery from a single charge.

The next new feature is multicolored running lights. On previous models, we've had running lights that you could control from the handheld, which allowed you to turn them on and off if your dogs were running, especially in low light conditions or at night. These new collars now give you seven different color options so you can identify your dogs in the dark by changing their light color.

These new Garmin collars allow you to change the flex bands. In the past, the flex band contained a wire going to the GPS antenna. In these new T-series collars, the flex band can be easily switched out in the field by removing just two screws, decreasing downtime.

The multicolored status light is a major upgrade on these new T-series collars. The status light flashes in the center of the collar when it's turned on, and the color indicates what your collar is doing:

Yellow: searching for GPS signal

Green: acquired GPS signal

Blue: pairing mode

Red: low battery

Having the multicolored status light makes it easier to look at your collar and tell when it's ready to use.

The TT25 and T20 come in one standard size and are smaller than previous regular collars. (Garmin does not offer MINI and regular sizes of these.) They are sized so they will fit most dogs really well. It's not so small that it's going to be a problem on a large dog, yet it's not so big it's going to cause a problem with smaller beagles.

Automatic WiFi updates are a great new feature. You can sync the collars to your home WiFi network using your Alpha 300 handheld, and when you put the collars on the charger, they will go online and check to see if there are any updates. Then, they automatically install the new updates. This will save you a lot of time and keep you from wondering if there's a new update.

Steve Snell

Browse Previous Product: Garmin TT25 MINI Add-On GPS TRACKING + TRAINING Collar for Small Dogs

Shop Next: Garmin TT25 Add-On GPS TRACKING + TRAINING Collar with Remote Beeper

Customer Reviews

1755723652

 

Review Summary

4.9

68 Reviews

5

87% (59)

4

13% (9)

3

0% (0)

2

0% (0)

1

0% (0)

100% Recommend this product (68 of 68 responses)

By Tony B.

Colorado

Mini 25TT = tired pups

December 25, 2024

The mini 25TT met and exceeded all my expectations. At first, I was a little bit concerned of the new design, but after a few hunts came to realize The mini 25 TT is built for the smaller hunting dogs, and I could see the performance within my pups, not having the saggy heavy head from the bigger models

Pros

• Better design
• EZ set up
• Durable components
• Adjustable for small dogs (Pointing dogs, vizslas

Cons

• Antenna,is still a little too long
• The new charging components do not match the older ones
• Only came with a charging cord, not a plug

By Susan

Ford City

works well

March 24, 2026

All good except the antenna was very long as it was the extended range. A bit too big for my beagles. I swapped it out for a standard one I had, works fine. Standard battery on dynamic lasts a long time.

By JEFF

Illinois

TT 25

February 13, 2026

This is a great upgrade from the TT 15 mini's that I was using. I bought the TT 25 mini's with the short flex bands, and they fit great on my Mountain Curs that weigh 45 lbs. Gun Dog Supply is the place to buy the TT 25's, they will treat you right!!!

By Cory

Myton, Utah

Works good. Improved over the. TT15 mini

February 13, 2026

Great service & product

By Tracy

IN

TT25 mini

February 5, 2026

I like the fit better than the TT15 mini

By Steve

West End, NC

Great Product

January 13, 2026

Fits my Brittany very well. Like the wider collar and clips to hold antenna. As always, really appreciated Steve's very informative videos. Big difference. Gun Dog Supply always provides excellent customer service and has an experienced staff in MS not out of the country.

Pros

• Better fit for small dogs
• Wider collar with clips
• More tracking functions

Cons

• None

By KO

Central Cali

Upgrade time

January 9, 2026

After owning TT 10 collars since they've came out and realizing you can't rebuild them after the collar strap finally rotted away I purchased one of these they are pricey, but you get what you pay for (usually) super fast shipping from GDS too.

Pros

• More features and more battery life

Cons

• None so far

By KY

Kansas

TTS Mini

December 23, 2025

Smaller size works well for my 30 lb French Brittany. Battery life is excellent.

By Stubbs T.

Union Springs

TT 25 add on

December 18, 2025

Nice upgrade. Easy tolink up to my system. Fast shipping and easy transaction with Gundog Supply

By Bryan

NC

Better than my old tt15 mini

December 4, 2025

I'm enjoying this collar so far. I'm just hopeful it lasts. The battery is way better, lasts a lot longer. It seems more durable than the other collars Garmin made. It has a different charging mechanism than the old collars. Didn't know this before purchasing . Not a deal breaker

Pros

• Battery life, syncing with my Old alpha 100, seems sturdier

Cons

• Definitely bigger than the TT15 mini which fit my griff well. So far doesn

By Jim

Michigan

***** Very Very Good collar exactly as described

November 29, 2025

Customer service here is fantastic they are real people not machines speak english and are very knowledgeable and helpful

By Anthony

WA

Mini to fit my Teckels

November 22, 2025

I've been using Garmin for years, and I always had to modify the collar to fit my small dogs (Teckels). I purchased the mini and will now sell all of the others and get 3 more minis and one standard for my Drahthaar. Great product and GDS always provides excellent service.Anthony B Williams

Pros

• Smaller to fit smaller dogs, Excellent tracking ability!

Cons

• None yet.

By Randy R.

Soldotna, Alaska

Works Okay for my small Brittany

November 6, 2025

Even as small as the mini is there is a small sweet spot where even the longer pins work for stimulation on my Brittany with about a 12' neck. However, it is working. The mini takes longer for my Alpha 200 to acquire than the TT15 collars. Overall the collar is doing what I need it to.

Pros

• Fits my smaller dog.

Cons

• Takes longer to acquire a signal.

By Doug

Adrian, Mo.

Great collar for small Beagles.

November 6, 2025

Works exactly as advertised. I recommend this product.

Pros

• Fits well on my smaller dog. Tracking and map functions are terrific.

By Justin

Wv

Tt25 minu

November 6, 2025

Love the tt25 mini for my bird dogs

Pros

• Collar fits perfectly

Cons

• Antenna alittle to long but its a easy fix

By Steve

Oklahoma

Great Collar Great service

November 4, 2025

Garmin has knocked it out of the park with the new model TT25 and Steve's team provides great service with my old collar exchange.

Pros

• The collar is smaller with all the old features. Update and charging are even more simple than before.

Cons

• None!

By Benjamin P.

Woodhaven Michigan

Tt25 and Alpha 300

October 23, 2025

This collar and handheld combo is awesome. The geo fence feature made keeping my English cocker is shooting range incredibly easy. All it took was tone at the desired range and she would redirect.

Pros

• Tons of features and data

Cons

• Cost

By MDL

Lovells, Michigan

So Far, A Solid Collar

October 7, 2025

No issues so far and appears to be working well. The only minor complaint is that my dog's necks appear a little small for the collar (using the nearest hole or the second one). My pointers are around 45 lbs.

Pros

• Functionally perfect so far.

Cons

• Collar is a touch big for 45 lb. english pointers

By Pat

Colorado

Great initial reaction, but time will tell.

October 1, 2025

I run 2 dogs and switched to TT15 with 550 pros 5 years ago. I use the collars and remote every day. The system is excellent when it works, for both training and hunting. The collar/receiver combo has helped me find dogs that took off after deer multiple times and button placement is perfect for training. The 25 has a better profile and is lighter for the dogs. The light is significantly brighter for training at dawn and dusk in the summer. Now the bad, through the last 5 years, I am now on my 3rd 550 pro, and my 3rd TT15 and 1st TT25. Yes I have had 2 collars and 2 receivers fail in 5 years, but because of the GPS and button set up for training I keep coming back. Hopefully the TT25 is more reliable.

Pros

• Improved profile (see below), stronger light.

Cons

• History of TT15 failures is a concern for electronics.

By Alexandra D.

Montpelier Vermont

Game Changer for My Dog Pack Hiking Business!

September 26, 2025

After one of my dogs went missing for 9 hours, I invested in 13 collars. They haven't failed me! I have used the GPS tracking in dense Vermont woods and found my dogs. Highly recommend. Don't buy anywhere but Gun Dog ... they are the best.

By Tom

NY

Nice size for my pointer

September 17, 2025

Exactly how described, fits my 45lb pointer better than the regular sized collar.

Pros

• Sized down for smaller dogs

By Kirk

North Dakota

I would highly Recommend

August 30, 2025

I bought this collar with a fluorescent pink strap for the new addition to our hunting group, a female English pointer who is only about 35lbs at the moment. I also bought the same TT25 MINI, for my 60lb Weimaraner, with the PRO 550 PLUS a few years ago when my ASTRO 320 stopped working. I have had no disappointments with the TT25 MINI. It has put up with all the bulldozing and hard work my versatile dog puts it through. From many water based waterfowl retrieves, to upland hunts through cat tail sloughs and tall cane grass, to summer training, it has never failed me!!! Always consistent stimulation, or tone exactly when I need it. The GPS always true and spot on.As far as Gun Dog Supply is concerned. I do business with no other On-Line dog supply retailer, even if the price might be a dollar or two more. This company is extremely friendly. They reply with any questions quickly and honestly. An awesome example: I had a problem with a Garmin Watch pairing to a transmitter that I bought off them. GUN DOG SUPPLY spent many days back and forth with ME to solve the problem, assuring me that even if Garmin cant fix the problem prior to the season opener, that they would back the product, send me a new one and deal with Garmin themselves to get it resolved. Steve stuck by my side through the whole process replying to me daily until it was resolved. Kathy in receiving and the rest of the crew at GDS are on top of their game to assure my products are shipped quickly. They always include a quick note with my confirmation and hand signed signed packing slips with well wishes( a nice touch). They definitely make one feel like part of their family and team. I am more loyal to this company than ANY other store I have done business with ever. A great company with old school values who keep up to date, physically and technically, with their product line to assure US the best products available. Lastly, their videos have helped tremendously with some of my purchases. Good luck and be safe in the field everyone! Kirk

By Ted

Woodbine, MD

Garmin TT25 - Good Upgrade

August 20, 2025

This is unit is a worthwhile upgrade from the previous model. GPS is accurate (generally more accurate than the Alpha Handheld - older 200i model). The improved antenna attachment system is the best change - in the previous generation collars - it was a common point of failure.

By Randall

Southeast Kansas

TT25 mini

August 8, 2025

Very pleased with it... Bought for my GSP puppy. Fits her great and has been a game changer by being able to let her run a little more freely.

Cons

• None... That I've noticed or experiencing yet.

By Adam

Maine

Great collar and customer service

August 7, 2025

The collar performs well as expected. I was even more impressed with the customer service when I needed extra parts for my collar and Gun Dog Supply was able to send me replacements very quickly.

By Greg

Franklin TN

TT 25 Garmin collar

August 4, 2025

Love this collar.

Pros

• More compact than previous models

By Greg

Up North

Great Smaller GPS for a Griff

July 11, 2025

Our Wirehaired Pointing Griffon is 50# and she has done well with the TT 15X mini. This replaces that and is working well.

Pros

• Longer and faster charge with the Lithium battery upgrade

Cons

• Slightly bigger and heavier that the TT15X mini

By Eric G.

Texas

TT25 Mini's for Hunting Terriers

June 27, 2025

The collars are fantastic and track the dogs perfectly in the field. They fit our Jadgt, and Guthrie terriers as they are hunting hogs.

Pros

• Easy to use

Cons

• None

By JAMES K.

Camp Hill, PA

Excellent Product

May 8, 2025

Gun Dog Supply set these new collars up as 'Minis" . Excellent fit for my Beagles.

By RM

NM

Garmin has been listening

May 2, 2025

They have dealt with my peeves from the older model collars! and come up with some new stuff that is handy .... This one hasn't seen a whole lot of use yet. I've owned a lot of Garmin tracking collars from the T-10 to this one , all have worked well but these newer models have a bit extra that is nice to have . In the past I've used their collars for Hounds but this one is being used for a retriever and so far so good, water doesn't seem to bother it and it has been in the water a lot on a young dog that is hard on everything and doesn't believe in avoiding objects in her way . As I said so far it seems to be working just fine and I already know from past experience that Garmin stands behind their products so no worries there ..

Pros

• A little smaller and lighter which is good as it is being used on a smaller sized retriever. Went with the short piece for the GPS and that helps it fit better , Like the new antenna clips but wonder how well they will hold up..

Cons

• Haven't run into any real cons with it yet

View All 68 Reviews

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Garmin TT25 EXT Collar