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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 (Blue, Medium)

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Availability: In Stock.
Fulfilled by Amazon

Arrives Thursday, May 21
Order within 11 hours and 38 minutes
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Color: Blue


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: Fitness Tracker


Included Components: Charger, USB Cable


Battery Life: 3 months


Package Dimensions ‏ : ‎ 9.06 x 6.69 x 1.93 inches; 2.72 ounces


Item model number ‏ : ‎ FC3B


Batteries ‏ : ‎ 1 Nonstandard Battery batteries required. (included)


Date First Available ‏ : ‎ July 10, 2025


Manufacturer ‏ : ‎ Fi


Best Sellers Rank: #11,183 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 (1,159)


Item Weight: 2.72 ounces


Manufacturer: Fi


Item model number: FC3B


Batteries: 1 Nonstandard Battery batteries required. (included)


Date First Available: July 10, 2025


Item Package Dimensions L x W x H: 9.06 x 6.69 x 1.93 inches


Item Weight: 77 Grams


Brand Name: Fi


Target Audience Keyword: pets


Warranty Description: 1 Year Warranty


Model Name: Fi Series 3


Color: Blue


Size: Medium


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: Thursday, May 21

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
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • 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

  • WORTH EVERY PENNY
I recently purchased the Fi Series 3 Smart Dog Collar for my energetic pup, and I couldn’t be more thrilled with the experience! This innovative collar combines GPS tracking with activity monitoring, making it an essential tool for any dog owner who values their pet's safety and well-being. **Design and Comfort:** The collar is sleek and stylish, available in various colors to suit your dog's personality. It’s made from durable materials that stand up to the wear and tear of daily dog adventures, and my dog seems comfortable wearing it throughout the day. **GPS Tracking:** The GPS feature is a game changer! I can track my dog’s location in real-time using the accompanying app. The geofencing feature is fantastic, alerting me if my dog wanders beyond a designated safe zone. **Activity Monitoring:** The activity and fitness monitor is another highlight. It tracks my dog's daily activity levels, encouraging us to engage in more playtime and exercise. The app provides insights into my dog’s activity trends, helping me to keep him healthy and active. **Battery Life:** I was pleasantly surprised by the battery life. With regular use, the collar lasts for several weeks on a single charge, which is impressive for a device with such advanced features. This means less time worrying about charging and more time enjoying walks and play. **App Integration:** The Fi app is intuitive and user-friendly. I appreciate the detailed reports and the ability to set goals for my dog’s activity levels. It’s also easy to navigate, which makes checking in on my dog's status a breeze. **Conclusion:** Overall, the Fi Series 3 Smart Dog Collar is worth every penny. It’s not just a collar; it’s a comprehensive tool that enhances the safety and health of my beloved pet. If you’re looking for a reliable GPS tracker and activity monitor, I highly recommend giving this collar a try. It’s a must-have for any dog owner! ... show more
Reviewed in the United States on December 14, 2024 by Amazon Customer

  • Amazing health and location tracker!
Color: Gray Size: Small
Great product for tracking your animals health. It’s amazing all the other things it tracks also! Just like an Oura ring or an Apple Watch, but for your dog or cat. It just does so many things. If you care about your animal, this is a must buy!!
Reviewed in the United States on January 10, 2026 by W.A.S.

  • 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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