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Home > Cat & Dog Products > Dog Tracking Collars > Garmin Alpha 100 Dog Tracker and Trainer

Garmin Alpha Astro TT-15 Collar

Garmin Alpha Astro TT-15 Collar
Purchase additional TT15 to be able to track more dogs at one time with Alpha or Astro

Combining Garmin GPS tracking with Tri-Tronics dog training, the integrated TT15 lets you get optimum performance from your valued dogs. 

18 levels of momentary and continuous stimulation when used with Alpha 100 handheld. Offers tracking only when used with Astro 320.

When purchased separately, the TT15 ships with a red strap. When sold as a bundle with the Alpha 100, a black strap is included. Additional replacement collar straps are also available in multiple colors (sold separately).


  • Track and Train with one collar using Alpha 100 handheld.

  • 18 levels of continuous and momentary stimulation - plus audible tone and integrated LED light beacons (activated from the Alpha 100 handheld).

  • TT15 collar is equipped with a top-mounted, high-sensitivity GPS and GLONASS receiver for increased signal reception.

  • Replaceable 1-inch collar strap.

  • Rechargeable Li-ion batteries with a battery life of approximately 24-48 hours depending on update rate.

  • Dog rescue mode switches TT15 to a slower update rate to prolong battery life.

  • Rugged and waterproof design (10m).
  • Can start/stop VIRB camera recording based on user command from Alpha 100 handheld

  • Includes 2 lengths (long and short) of removable, stainless steel, insulated contact points for reliable performance in wet conditions and extended comfort for any coat length.

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Item #: GARMIN-TT15

Availability: In Stock. Usually ships in one business day!

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If you plan to use this product outside of the USA, please be advised that the radio communication frequencies utilized for United States models of the Garmin Alpha and Astro products may not be authorized for use in Europe.

To ensure compliance with local laws, the radio function that allows the U.S. dog collar products to communicate with the handheld device will be rendered inoperable when used in Europe (the radio communications between the collar and handheld will not work in Europe).

Product versions with the Europe-restricted modification began shipping in late 2013.

For all products sold before this modification has been implemented, the radio function will continue to operate normally; however, if you update the product's firmware or software to a new version that contains this modification, your product's radio function will be rendered inoperable.

Suggested Products

Garmin Alpha 100 Handheld

Garmin 1" Collar Strap Replacement

Garmin Dog Collar Transmitter Protective Cover