Our Fi Series 3 & 3+ Refit is an Add-On feature that can be purchased with most of our  Harbor Hound Co. waterproof collars. Our refit design is a "mounted" end-link design that places the end-links permanently on top of a solid constructed collar. Our original design relieves any stress or pressure placed on the Fi device or end-links.

With our "mounted endlinks" design, the Fi endlinks will be attached to the top of your collar, relieving any stress on the endlinks and device. You will be able to charge your Fi without removing the Fi Device from the collar by simply sliding the charger between the Fi and the collar and position the Fi on the charger until your Fi lights up to indicate that it is charging. I can also make a refit collar that fully detaches at the end-links like Fi's original "In-Line" design collar. This works best on single layer 1" and 3/4" wide collars. Please leave a note at checkout or send an email if you would prefer an "In Line" style collar.

Please note a few things: Our Fi refit will take up about 6" of space on your collar and works best for collars of at least 13" or longer. Please email me if you have a special request or questions.

QUICK ORDER LINKS to our most popular collars that include the Fi endlinks in the listing:

Fi Compatible Side-Release Collar

Fi Compatible 1" Buckle Collar

Fi Compatible 1" Rua Martingale

Fi Compatible 1.5" Rua Martingale

Fi Compatible 1.5" Layered Buckle Collar

Fi Compatible TALA studded Collar

Fi Compatible SHASTA studded Collar

 ** Harbor Hound Co. does NOT sell the Fi device. You can purchase your Fi GPS device at TryFi.com Use that link to save $50 on your Fi Smart Collar! Or use discount code "harborhound50" at checkout.