Fi New 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 (Yellow, Small)
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- – 6-month term
- – No impact on credit to apply
- – Instant approval decision
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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:
Only 10 left in stock, order soon!
Arrives
May 1 – May 5
Recently Viewed
Color: Yellow
Size: 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.
- 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
Special Feature: Geo-Fence, Real Time Tracking, LED Light
Connectivity Technology: Cellular
Supported Application: iOS
Specific Uses For Product: Pet Monitoring
Additional Features: Geo-Fence, Real Time Tracking, LED Light
Connectivity Technology: Cellular
Supported Application: iOS
Specific Uses For Product: Pet Monitoring
Battery Average Life: 90 days
Compatible Devices: Smartphone
Battery Capacity: 285 Milliamp Hours
Item Weight: 77 Grams
Enclosure Material: Stainless Steel, Plastic
Brand: Fi
Built-In Media: Charger, USB Cable
Manufacturer: Fi
UPC: 850064800425
Model Number: FCB3
Mfr Part Number: FCB3
Warranty Description: 1 Year Warranty
Unit Count: 1.0 Count
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
May 1 – May 5
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: Gray
Size: X-Large
This is the perfect tracker for your dog! It is gps and has signal nearly everywhere! It works from a cell phone tower signal and has its own phone number. The cost is well worth the peace of mind that it provides to keep my Xena safe as possible. It tracks much more than location. It tracks different things such as how many times for eating, drinking, sleeping, and much more…..
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Reviewed in the United States on April 4, 2026 by Melissa C.
Color: Gray
Size: Small
We hike on a farm where Layla can run off leash. I took a different route from our usual and after not seeing her for a short while I started whistling. She didn’t come and the panic began. Without going into all the details of speed walking back to the truck, then back to where I lost her, getting through the gate without letting the cows out and huffing and puffing up a very steep hill while trying to whistle; I found her. We came home, called the neighbor to see which tracking collar he had and ordered the Fi. We have had it for 5 months and it is fantastic. We are in a very rural area but the Fi has never went out of service. The battery lasts for at least a week and she wears it every day. It is rugged and waterproof. Layla is a Vizsla, very active. She runs through woods, fields and creeks and her collar has held up perfectly. It is also interesting to see how far she runs on our walks. I have had to use lost dog mode on several occasions. Her recall has improved tremendously from when she was lost. I think it scared her also. It is very reassuring to be able to start lost dog mode and see exactly where she is at. I am very happy with the quality and performance of the collar.
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Reviewed in the United States on March 30, 2026 by Amazon Customer
Color: Pink
Size: Large
We have an Australian Shepard who is very active. U fortunately our 25 acres doesn’t contain her and she continuously left our property and we would have to go looking for her. I found the Fi Series 3 and decided to give it a try. This is the best solution we could have come up with. Now we can rest in peace knowing that we can always find her. I was not sure this would work in the country but it amazing. We set up a safe zone and we get a notification if she leaves it. She is really fast so she can get a distance away before we see she has left. But now we know where she is headed. Best money I have ever spent…..worth every penny. Great app and so easy to set up and use. Very accurate
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Reviewed in the United States on March 2, 2026 by Sharon L Shanks
Color: Blue
Size: Small
This dog tracker collar is a great option for pet owners who want extra peace of mind. The GPS tracking feature makes it much easier to keep an eye on a dog’s location, which is especially helpful for active dogs or pets that like to wander. It gives a nice sense of security while still looking like a normal everyday collar. I also like that it includes a membership to get started, which makes it more convenient right out of the box. The collar feels like a practical mix of technology and everyday use, and it is a smart tool for monitoring a dog’s whereabouts and activity more easily. Overall, this is a useful and reassuring product for anyone who wants a reliable way to keep track of their dog while adding an extra layer of safety.
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Reviewed in the United States on March 23, 2026 by elba
Color: Pink
Size: X-Small
I really love the Fi collar I do wish it beeped like an air tag but totally worth it and the battery last a good long time as well, true to size I do wish it was a little smaller but I love, it works great
Reviewed in the United States on April 1, 2026 by jocelyn
Color: Pink
Size: Small
I didn’t buy this for my springers and bought Apple tags instead. VERY limited value. For my Maltipoo I decided to try because I moved to an area with a busy road. I love it. It fits her little self comfortably, (She wears in addition to another collar). I can spot her in the map, get notices when she leaves usual areas, and surprise! It monitors all kinds of things! Eating, scratching, drinking, barking, exercise and more! When a friend dog sits I know where/when/if they took a walk, and the path they took. Charges easily, holds charge adequately, and appears to feel invisible to her. She never scratched or pawed at it. I actually recommend this heartily! It even has a light I can remotely activate. COME ON! Who knew??
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Reviewed in the United States on April 2, 2026 by R. OBrien
Color: Gray
Size: Large
Excellent collar, You know exactly where your pet is! Battery life after 5 days is at 82%,so lm thinking at least 2 weeks before charging is necessary. Bought large collar and it has a metal buckle which is secure, and as long as your dog is wearing it , its precise location is always visible. Noticed when I took my dog to groomer a few days ago, I freaked out because it showed my dog was near the highway. I called groomer immediately and she reassured me Finn was there and okay. When she called to let me know that he was done, I checked location and it showed him at the groomers location. I think when she removed collar to groom him this is when its location wasn’t accurate , once she put collar back on it solved that issue. Highly recommended
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Reviewed in the United States on February 26, 2026 by Anthony
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