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Fi

New Fi Series 3+ Smart Dog Tracker Collar [12 Month Membership Included] GPS Tracker for Dogs with Health & Behavior Monitoring, Escape Alerts, Waterproof, LED, Apple Watch Compatible (Pink, Medium)

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Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, May 25
Order within 9 hours and 12 minutes
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Color: Pink


Size: Medium


Features

  • NEXT-GEN GPS DOG TRACKER: The Fi Series 3+ collar is our most accurate and reliable smart collarfeaturing 2x improved GPS performance from past devices to track your dogs real-time location, nationwide, with no range limits using the Fi app. Its the perfect Christmas dog collar for dog moms and dog dads.
  • ESCAPE ALERTS: Custom virtual fences use the Fi app to alert you the instant your dog leaves a safe zone. If your dog escapes, get real-time notifications from your GPS dog tracker every few seconds as your dog roams.
  • AI-POWERED HEALTH + BEHAVIOR TRACKING: The first smart dog tracking collar to detect activity, rest, barking, licking, scratching, eating, and drinkinggiving you a complete picture of your dogs well-being. Review all your dogs health and behavior data right in the Fi app.
  • APPLE WATCH INTEGRATION + ANDROID & IPHONE COMPATIBLE: View live location, activity, and Lost Mode from your Apple Watch. Plus, ask the built-in AI Companion anythingfrom behavior questions to care tips from your smartphone. This dog tracker delivers personalized reminders for vet visits, vaccines, and more through the Fi app.
  • SMART VET RECORDS: Never lose track of your dogs medical history. Add vet receipts, pet insurance, vaccine records, training certificates, and other important health documents in the Fi app to help organize, summarize, and store the documentsall in one place.

Brand: Fi


Connectivity Technology: RF


Supported Application: Fi app


Material: Plastic


Included Components: Charger, USB Cable


Package Dimensions ‏ : ‎ 9.09 x 6.77 x 2.01 inches; 2.72 ounces


Item model number ‏ : ‎ FCB3


Batteries ‏ : ‎ 1 Nonstandard Battery batteries required. (included)


Date First Available ‏ : ‎ July 10, 2025


Manufacturer ‏ : ‎ Fi


Best Sellers Rank: #8,023 in Pet Supplies (See Top 100 in Pet Supplies) #7 in Pet Location Trackers


#7 in Pet Location Trackers:


Customer Reviews: 4.1 4.1 out of 5 stars (1,131)


Item Weight: 2.72 ounces


Manufacturer: Fi


Item model number: FCB3


Batteries: 1 Nonstandard Battery batteries required. (included)


Date First Available: July 10, 2025


Item Package Dimensions L x W x H: 9.09 x 6.77 x 2.01 inches


Item Weight: 77 Grams


Brand Name: Fi


Target Audience Keyword: pets


Warranty Description: 1 Year Warranty


Model Name: Fi Series 3


Color: Pink


Size: Medium


Material: Plastic


Number of Items: 1


Included Components: Charger, USB Cable


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, May 25

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Affirm Financing
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  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Great collar Works fantastic
Color: Gray Size: Large
This dog collar Works great. Lots of fun to see other people's dogs and track the activity. The battery life is phenomenal. Lasts weeks in between charges.
Reviewed in the United States on December 28, 2025 by jason

  • Definitely Fi Over Others
My yorkie has used two generations of Fi collars and Whistle before that. Had to purchase another for my new frise mix who’s a bit loony. Love Fi because the battery goes on for weeks, there’s lots of third party collar options out there, the LED is awesome at night, and it doesn’t look like something added to a collar as much as other brands do or adding an AirTag does. The Fi was a life saver when my yorkie was younger and ran off after squirrels; but luckily learned to listen and to return home by him self; but still love the collar because of the fitness tracking. I recently had an AirTag on my frise mix; which worked most of the time; but the Fi is just more reliable and as already mentioned - love the added LED light when walking the dogs at night. It’s not a strong light that’s meant to replace a flashlight; but it’s more to know where they are, help people spot them, and hopefully avoid bicycles or even cars from hitting them. As a bonus - there’s an option to choose from a few light colors. If one of the doggies go missing, the Fi can be put into lost mode, which causes the light to flash red (so I don’t like using the red light to avoid confusion if others know about the collar). The Fi collar is definitely worth it if you worry about your dog running off and/or their daily workout. There is somewhat of a social network built into the app where you can post and other like other pics of dogs and connect with other dog owners; but I don’t use it much and the app isn’t built around a social network which I’m thankful for. I will agree that pricing can be high compared to just using an AirTag and/or options from some carriers that offer similar trackers now; but bundling for a year or two seem to help reduce the cost (although it has to be paid upfront at once). …maybe Fi should consider allowing people to use those new financing options that allow for 4-bi-weekly payments interest free (just a suggestion). I also do wish the collar could play a sound when in lost mode; but at the same time I can see that causing some dogs to panic and God forbid, possibly run into traffic or get injured somehow. Anyways - love the collars and definitely look into the third part Sexy Dog Beast collars if you want something more premium and quality made for your furry friend. ... show more
Reviewed in the United States on July 16, 2024 by iMe iMe

  • Great Buy
It really helps to have a GPS tracker when one of your dog tries to get out all the time. We recently fixed our fence, but our husky sometimes still finds a way to escape. We are thankful that this collar has helped us to find her more and I like that it has a long battery life. It also has a Lost Dog Alert feature which is nice. ... show more
Reviewed in the United States on December 30, 2025 by Zac Mueller

  • Inaccurate GPS; not reliable for rural areas.
I’ve been exceedingly hopeful about this product for a long time now. When it connects to GPS, it’s helpful for at least getting you in a general range. It does not accurately let you know when your pet has left the safe zone at all. It also does not pinpoint your dog’s location on GPS; it only shows a general location, so you could be 500 to 1000 feet apart, which is a very big distance if you’re in a forest or field without a clear line of sight. It can take 45 minutes to get a notification that your dog has left the safe zone, depending on when it picks it up on GPS. The battery does last a while, but nowhere near the three-month claim. It is sturdy and it does stay on, however. The point of the light I don’t quite understand because it’s not bright enough if you’re looking for them at night. I think it’s just a fancy added feature. The subscription part, where you can see all of the steps that they take, is not really a bonus, the way I purchased it. It was part of a package deal, so I’m not sure if I have to keep it yet. I certainly don’t plan to because it won’t be worth the money for what I’ve gotten out of the product. If you’re looking for something that is going to immediately tell you when the dog leaves, give you a small area, as in less than a third of an acre for a safe zone, and pick up GPS signals in rural areas, you’re going to need to spend a lot more money or find a better product that I may not have found. This is not meant for rural areas or anywhere that has gaps in GPS. You’ll just be hunting for your dog for hours, walking in circles, playing chase, hoping this thing actually leads you somewhere. ... show more
Reviewed in the United States on December 19, 2025 by Syndel

  • Great GPS feature, weak design on collar snap
Color: Yellow Size: Large
For the most part I like this collar and the GPS Tracker, The GPS Tracker feature is great. However, I have had mechanical issues with the snap clamp numerous times. My dog is a 70-pound, male black lab, 7 years old. I live on a farm. We take walks twice a day, morning and evenings. The collar has unsnapped itself 4 times. Two of which were in his bed it came off. The other two times were late evening, losing it in the woods. Not knowing until I get home. Then I've had to use the GPS tracker on my phone to go out into the night to hunt the collar. I was able to find it. but the collar is not reflective, and the LED light is very dim. The company I purchased it from is sending me a new collar to try. Just know the springs in these clamps are not that strong. ... show more
Reviewed in the United States on December 9, 2025 by Terry Ozburn

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