Today, Fi introduces its new Smart Collar, entirely powered by AI. The Series 3+ not only tracks your dogs, it understands them. With its new set of AI-powered algorithms, the Series 3+ is not only the fastest, most accurate, and longest-lasting location tracking device ever built for your dogs, it’s also able to detect when your dog is barking, eating food, drinking water, licking their paws, or scratching.

Let’s dig into each new feature of the Series 3+:

2X Better GPS Tracking

You spoke and we listened. You want faster, more accurate location tracking everywhere for your dogs. With Series 3+, we are happy to announce that we reduced the speed of tracking by 50% and increased tracking accuracy by 2X. This means faster escape alerts and better location precision at an increased refresh rate for your dogs… all in the same small package.

360° View of Your Dogs’ Health

Series 3+ is the first smart collar able to detect the time, duration, and frequency of multiple behavioral events like barking, scratching, licking paws, drinking water, and eating food. With AI, Fi is putting the power to monitor changes in your dogs' behavior in your hands—and giving you the ability to detect small issues before they become health-threatening conditions.

“One of the biggest challenges we face as veterinarians is when dog parents bring their dogs in only after a small issue has turned into something serious,” said Dr. Jeff Werber, D.V.M. “Fi Series 3+ gives owners the ability to spot subtle changes in their dog’s behavior, whether it’s a drop in activity, changes in drinking, or increased scratching. That means dog parents can catch potential health issues before they become visible, critical, or irreversible. It’s a game changer for proactive care.”

New Apple Watch Integration

Series 3+ puts all the data you care about right on your wrist. Track your dog’s location and activity on the go, no phone needed. Jogging, traveling, running errands—you’re always connected, effortlessly.

Smart Health Records

No more digging through emails or folders to find vaccine records or insurance documents. With smart health records, you can upload or email any document to your Fi app, and we will handle the rest—sorting, summarizing, and storing everything securely in one place.

Still the Smartest Option for Your Dogs

  • Small / inline design like Series 3 to live comfortably on your dog’s neck 24/7
  • Detailed tracking of activity, eating, drinking, scratching, barking, naps, and sleep
  • IP68/66K waterproof, tested in salt water for athletic swimmers
  • 400-lb-resistant stainless steel, basically unbreakable
  • Custom safe zones to be alerted of any escapes
  • Unlimited multi-ownership, add owners and caretakers with privacy control
  • Longest battery life—more than Series 3, still up to 3 months on one charge
  • Compatible with all Series 3 Makers custom collars
  • Night light for the evening strollers

Already a Series 3 Member?

Not to worry—upgrading is easy. Start the process from within the Fi App.