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Garmin TT25 EXT with Extended Life Battery

  • Get up to 136 hours runtime using dynamic tracking
  • Multi-colored LED running lights help you ID your dogs in the dark
  • "One-size-fits-most" design fits comfortably on small or large dogs

  • watch video

    Strap Color: 


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    Code: TT25EXT
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    TT25 Collar DisassembledTT25 Collar Front DetailTT25 Collar Back DetailTT25 Collar Bottom DetailTT25 Collar Probe DetailTT25 Collar Side DetailTT25 Collar Probe ComparisonTT25 Collar Tracking Light DetailTT25 Collar ScaledTT25 Collar on ChargerTT25 Battery Pack ComparisonTT25 AccessoriesTT25 Status Indicator LightsTT25 Manual

    Some assembly required.

    Garmin TT25 EXT Features:
    • 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"
    • 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

    Garmin TT25 EXT Collar Specifications:
    • Dimensions: 1.75" H x 3.2" W x 1.8" D
    • Weight: 10.4 oz. with collar strap and antenna

    Garmin TT25 EXT Collar Compatibility:
    • 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

    Garmin TT25 Extended Battery Life (included):
    • 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

    Garmin TT25 EXT Comes With:
    • Steel braided antenna
    • USB-C cable
    • Collar charging clip
    • Short and long contact point sets with wrench
    • Owner's manual
    • 1-year Garmin warranty

    Not available to Canadian addresses. This product is approved for use in the US only. Collar-to-handheld radio communication may be disabled in Europe and other prohibited areas.

    How to Pair Additional Garmin Collars to Your Alpha

    Please read all steps before starting.

    To pair wirelessly, the dog collar device must be within range of the Alpha handheld.

    1. 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.

    2. On the handheld, select Dog List > Add Dog.

    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 auto, tree, or point for the type of dog wearing the collar.

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

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

    10. 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.

    11. 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.

    Garmin TT25 EXT TRACKING + TRAINING Add-on 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.

    Download Owner's Manual for Garmin TT25 EXT TRACKING + TRAINING Add-on Collar

    owners-manualOwner's Manual for Garmin TT25 EXT TRACKING + TRAINING Add-on Collar

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    Customer Reviews

    Review Summary
    13 Reviews
    92% (12)
    8% (1)
    0% (0)
    0% (0)
    0% (0)
    100% Recommend this product (13 of 13 responses)
    By Tracy
    Summerville, GA
    Another great Garmin product
    July 18, 2024
    Very pleased with the tt25 collar. Love the size and especially the redesigned antenna guard. Battery last easily all day
    • Size
    • Dirty can build up around the antenna guard but it cleans up easily
    By Jesse D.
    Central Florida
    Worth it
    July 18, 2024
    Disclaimer: The TT25 paired with the Alpha 300i is my first track and train combo, so I can’t offer any comparison to older models or brands. The combo has really exceeded all expectations. I couldn’t imagine hunting without it now. As always, customer service from Gundog supply was top notch.
    • Battery life
    • Size compared to other models
    By greg
    lacon il
    2nd collar
    July 18, 2024
    best collar ive used
    By J B.
    North East Nevada.
    Great product
    July 18, 2024
    Works really well. Haven't had any issues with it, works as advertised. Easy to use, not a bunch features I don't need.
    • Ease of use.
    • Can't come up with any at this time.
    By Mel K.
    Bozeman, MT
    Great collar
    July 18, 2024
    The TT25 has been a great collar for our French Brittanys. Good battery life, easy to handle the dogs with this collar and good range and features,
    By Frank
    Chino Hills, CA
    Battery last a long tong
    July 18, 2024
    I am more than pleased with the tt25. I had two Tt15minis and was pleased with them, but the tt25 features have made me not go back to the tt15 mini. The battery last forever. I love the colored light indicator in the front. So far has been durable. I wish they were a little smaller for my smaller dog. I think it bothers me more than her.
    By JOHN C.
    July 18, 2024
    Another home run by Garmin.
    By P P.
    TT25 add on GPS tracking and training collar
    July 18, 2024
    • Easy to get on and off
    • Charge lasts for long time
    • It works and that
    • None
    By Ken
    South Carolina
    I love this combo!
    July 18, 2024
    I have really enjoyed this combo, I use it almost daily. The improved features are great for tracking and training my hog dogs, my bird dogs.
    By Mimi
    Great collar
    July 18, 2024
    This collar has great battery life, is easy to use, and can take anything that’s thrown at it. My dog definitely tests its limits and I have no complaints! Highly recommend.
    By Jeff C.
    NW Arkansas
    Great product
    July 18, 2024
    The simplicity of this collar and the immediate benefit in both response from dog and the GPS tracking capability quickly took my dog from a raging teenager to very well behaving best friend… Worth the price for me…
    • Response
    • Distance
    • Ease of use
    • Cost
    By Wayne
    Bastrop, Texas
    Garmin TT25 EXT Collar
    July 11, 2024
    The collar was received according to expectations. The collar was easily assembled and fits the dog well. I like the smaller size and less weight than an older TT15. The setup with my handheld and functioning with it worked well. Once tracking season gets busy in the fall, I will have more usage.
    • Lightweight. I will like the multiple colors for the lights on it.
    • The antenna seemed to curve a little to much forward toward the face of the dog. I bent it back and layed it under something so it retained more curve toward the back. It seemed to help.
    By John H.
    Northeastern Minnesota
    Reliable tracking & training collar
    March 1, 2024
    This TT 25 collar is a replacement collar for my mini TT15 dog collar that would no longer power up. I thought it was the battery and got a replacement battery from gun dog supply and found out that the battery was not the problem. It turns out that the TT mini 15 is discontinued so I called gun dog supply and spoke with Dave in customer service and he answered all my questions. I was a little worried that the collar would be too big and after checking my French Brittany's neck size I ordered the collar on line on a Monday and it was shipped the same day. I live in Northeastern Minnesota and I had the collar by Thursday. Even after a shipping delay in Missouri due to bad weather!

    The collar fit my dog perfectly! The actual unit is a little larger then the mini 15 and the antenna is longer but it still fit's my dog's neck fine and is not to big for her. The actual antenna wraps around her and is out of her way and doesn't hit the trees and shrubs like the shorter antenna did in the past. If I had to I could purchase the shorter flex band but at this point I don't see the need.

    I sent the batteries back and the very next day after Gun Dog Supply received them I was notified by email that I was getting a credit back on my credit card. Thanks Kathleen for re-sending the replacement batteries for the original batteries that were lost in transit!

    As mentioned I live in Northeastern Minnesota on the edge of a wilderness and 40 miles from town and have had the Garmin Alpha 100 and TT mini 15 now for almost 6 years and use them almost every day either being outside working, hiking or hunting grouse in the fall. The peace of mind knowing where my dog is at all times you can not put a price on!

    I did send the TT mini 15 back to Garmin and they refurbished the unit so now I have a back up.

    • Fantastic Customer Service from Kathleen and Dave at Gun Dog Supply, quick shipping with UPS
    • Battery life is SO much Longer!
    • Collar updates by itself with my home WiFi connection.
    • None
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