New Fi Series 3+ Smart Dog Tracker Collar [6 Month Membership Included] GPS Tracker for Dogs with Health & Behavior Monitoring, Escape Alerts, Waterproof, LED, Apple Watch Compatible (Pink, X-Small)
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- – 6-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
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Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
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FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
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Availability:
In Stock.
Arrives
Saturday, May 23
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![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 (Gray, X-Small)](https://m.media-amazon.com/images/I/71pnXb7zzCL._AC_US500_.jpg)
Color: Pink
Size: X-Small
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: iOS
Material: Plastic
Included Components: Charger, USB Cable
Package Dimensions: 9.09 x 6.69 x 2.01 inches
Item Weight: 2.72 ounces
Item model number: FC3B
Batteries: 1 Nonstandard Battery batteries required. (included)
Connectivity technologies: RF
Other display features: Wireless
Color: Pink
Whats in the box: Charger, USB Cable
Manufacturer: Fi
Date First Available: July 14, 2025
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, May 23
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.
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
Learn more about financing & leasing here.
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Top Amazon Reviews
Color: Pink
Size: Medium
This thing is phenomenal I can’t even count how many times my husky has gotten through the fence. Since I got this collar it’s been less of a stress when she does get out At this point the whole neighborhood knows my dog It has a slight delay when initiating lost mode when the connection is bad on your phone but honestly it’s worth every penny You can share the lost mode with others and they can help you find your dog They will also be able to track her movements It does more like gives stats on health and movements. Tracks the walks too whenever you walk your dog with the exact outline of walk history Everything is date and time stamped aswel
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Reviewed in the United States on February 16, 2026 by Jonathan c.
Color: Pink
Size: Medium
excellent product. perfect for my Siberian Husky pup. Charge lasts forever as I’ve only charged it once in 2 months. App installed easily too. Would highly recommend.
Reviewed in the United States on January 31, 2026 by jtorgon jtorgon
Color: Yellow
Size: Medium
Just bought the Medium size for my 17 lb Frenchie. I was adopting and had to order a collar without having my dog available for measurements. I originally thought either the XS or S would fit my dog, but the S (10.5 - 13” neck size) was too tight. I was surprised that I ended up returning the S and had to buy the Medium. Seems like a quality collar, my trainer uses Fi collars with GPS on the dogs she is training. Now that I’ve used the collar for a couple of weeks I can appreciate the elegant design and very high quality and functionality of this collar. This is expensive, but a great value and great piece of mind knowing the gps would help me track down my girl if she gets lost. I would buy this again in a heartbeat & i thoroughly recommend!!
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Reviewed in the United States on December 7, 2025 by Dan
Color: Blue
Size: Large
First and foremost, why I bought this product instead of comparable competitors; My dog is like an octopus, even though he has 36 inch chest, somehow he can squeeze through a 5 inch hole in the fence. All of the competitors are clip ons and would instantly be left behind. This one is a slim metal casing that doesn't get caught in the process of escape. THE WHOLE POINT is tracking after escape. What sucks about this product is I had 2 duds in a row. Waiting on the 3rd via RMA. Both just stopped working about week 2. What also sucks is their complete lack of customer support. If you call, you get put on hold for an hour then hung up on. If you're lucky you get a followup email half the time. They respond to emails after about 2-3 days. The response you get is the same useless phone-tree call center crap we've all experienced from terrible companies the last couple decades. They would have a top tier product if it actually worked, and the whole company wasn't so terribly mismanaged. One final point, their "AI" "health statistics" are about as accurate as a random number generator. I wrote down the scratches, drinks, eating, etc. And they don't match up even remotely with what the app says. Update: app crashes immediately now and the 3rd device also doesn't work AT ALL.
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Reviewed in the United States on January 26, 2026 by Ryan C.
Color: Pink
Size: X-Small
We moved our feral cat, Tito to our farm but unfortunately she kept running away. We quickly discovered the ring collar tags do not work well in the country without WiFi. I opted to try Fi 3+, suited her up with a pink collar for some peace of mind after moving her back to our home at the beach. Fi works fairly well, but sometimes looses connection when she's outside. I've found if you turn on lost tracking, it quickly drains battery when she's outside. However, it is Interesting to track her adventures out exploring. Sometimes past tracking on app isn't documented and is extremely slow to load. I purchased the standard size Fi 3+ because of the extended battery time. Easy to set up and seems durable to date. Just hope they make some lag time updates that will fix accuracy of locations current and record all past travels. Sometimes it drops off and isn't available.
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Reviewed in the United States on February 10, 2026 by NC Customer NC Customer
Color: Pink
Size: Medium
This product has given my wife and I peace of mind while at multiple safe zones. Our 4 month old malinous/german shepard mix, loves to run and play with other dogs and with GPS, we always know where she is. It was easy to set up, fun seeing her stats vs others of her breed, and Fi sends good dog training information. The new 3+ knows when the pet is leaving a safe zone with a shared owner. Excellent upgrade over the 2, my daughter just upgraded her dog’s collar after he lost his collar, Fi helped put her new Fi on her account and it came ready to collar.
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Reviewed in the United States on January 26, 2026 by Bryan Hoyer
Color: Yellow
Size: X-Large
Love Love Love this thing it helps us keep track of where my dogs are. I have one for each dog. We had the fi mini and the attachment system was not good enough for my rowdy dogs. So we switched to the collar and wow it's so nice and the batteries last a few weeks between charges
Reviewed in the United States on January 17, 2026 by Bob
Color: Pink
Size: Medium
The colar works great even in rural country side and gave me a piece of mind. I highly recommend.
Reviewed in the United States on January 26, 2026 by jimmy