<p>Pair your Series 1 or Series 2 Fi GPS Tracker with the Tactipup 1" Extreme Dog Collar for the ultimate duo!  This collar is a replacement band for your Fi GPS Tracker (unit not included) that brings you the insane durability and quality of a Tactipup collar in conjunction with the smart features of your Fi unit.  This collar is NOT compatible with the Fi series 3 collar.</p> <p>Looking for a personalized collar or a collar that is Fi Series 3 compatible? See our full line-up of <a href="https://www.tactipup.com/collections/fi-compatible-collars" title="Tactipup Fi Compatible Products">Fi compatible products here</a>!</p> <p>Collar Specs:</p> <ul> <li>AustriAlpin aluminum Cobra Buckle</li> <li>1" Military Grade Webbing</li> <li>1" Black Welded Steel D-Ring</li> <li>Authentic Fi Collar Endlinks that allow you to quickly attach/detach your Fi GPS tracker to the collar</li> </ul> <p><strong>**Please note**: Accurate size is needed for the proper fit.  If your dog is between two sizes, order the larger size.  <a href="https://www.tactipup.com/pages/2-ways-to-measure-a-dogs-neck-size">Here is how to easily measure your dog's neck<span>.</span></a></strong></p>