![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, Large)](https://m.media-amazon.com/images/I/81tPm2EtDRL._AC_SL1500_.jpg "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, Large)")
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, Large)
Original price was: $119.00.$99.00Current price is: $99.00.
Price: $119.00 - $99.00
(as of Apr 24, 2026 08:22:07 UTC – Details)
Product description
The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. Fi Series 3+ Merchant Video
Fi GPS Trackers
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Customer Reviews
4.1 out of 5 stars 1,225
3.6 out of 5 stars 116
3.4 out of 5 stars 56
4.1 out of 5 stars 1,225
4.1 out of 5 stars 1,225
4.1 out of 5 stars 1,225
Price
$189.00$189.00
$189.00$189.00
$189.00$189.00
$189.00$189.00
$189.00$189.00
$189.00$189.00
Location
GPS & LTE tracking
GPS & LTE tracking
GPS & LTE tracking
GPS & LTE tracking
GPS & LTE tracking
GPS & LTE tracking
Battery life
Up to 3 months battery life
Up to 6 weeks battery life
Up to 6 weeks battery life
Up to 3 months battery life
Up to 3 months battery life
Up to 3 months battery life
Charging
Wireless charging base
Easy USB-C charging
Easy USB-C charging
Wireless charging base
Wireless charging base
Wireless charging base
Hardware
Customizable night light
0.56 oz
0.56 oz
Customizable night light
Customizable night light
Customizable night light
Waterproof
Waterproof (IP68/66K)
Waterproof (IP68)
Waterproof (IP68)
Waterproof (IP68/66K)
Waterproof (IP68/66K)
Waterproof (IP68/66K)
Product dimension
50.5 x 30.5x 11.5mm (L xWx D)
42 x 30 x 12.5mm (L x W x D)
42 x 30 x 12.5mm (L x W x D)
50.5 x 30.5x 11.5mm (L xWx D)
50.5 x 30.5x 11.5mm (L xWx D)
50.5 x 30.5x 11.5mm (L xWx D)
Health
AI-analyzed behavior tracking
AI-analyzed behavior tracking
Coming soon to Fi Mini Cats
AI-analyzed behavior tracking
AI-analyzed behavior tracking
AI-analyzed behavior tracking
Collar fits on
Only Fi-affiliated Maker Bands
Most Collars and Harnesses
Most Collars and Harnesses
Only Fi-affiliated Maker Bands
Only Fi-affiliated Maker Bands
Only Fi-affiliated Maker Bands
Apple Watch
Location updates on your wrist
Coming soon to Fi Mini Dogs
Coming soon to Fi Mini Cats
Location updates on your wrist
Location updates on your wrist
Location updates on your wrist
Made for
Designed for all dogs who roam
Ideal for puppies & small dogs
Ideal for cats
Designed for all dogs who roam
Designed for all dogs who roam
Designed for all dogs who roam
NEXT-GEN GPS DOG TRACKER: The Fi Series 3+ collar is our most accurate and reliable smart collar—featuring 2x improved GPS performance from past devices to track your dog’s 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 drinking—giving you a complete picture of your dog’s well-being. Review all your dog’s 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 anything—from 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 dog’s 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 documents—all in one place.
13 reviews for 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, Large)
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Original price was: $119.00.$99.00Current price is: $99.00.
Melissa C. –
Awesome GPS Tracker!
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…..
Amazon Customer –
Highly recommend for off leash walking.
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.
Sharon L Shanks –
Best money I have spent for peace of mind
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
NC Customer –
My feral girl, Tito with pink fi 3+
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.
Anthony –
Best collar for pets
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
M. Botero –
The collar that put our minds at ease
We bought this collar for our “flight risk” dog right before my husband and I were leaving on a trip. I’ve now been using the collar and app for ~6 months and I can say that it is very helpful. It was easy to set up, there are a lot of settings you can turn on or off, and there are multiple “safe zones” you can set up for your dog before it triggers a “lost pet mode”. I really like the community base that is there as well. It is fun to see other pets and people in my community who use Fi. The one down side is that it isn’t always EXACT with the walking path that we took, but all things considered it is pretty dang close. The alerts are accurate and I haven’t felt as worried about our little dog since we have had it. The battery life is several days – 2/3weeks at a time. It doesn’t seem to bother my dog’s neck and it charges easily and quickly. I would definitely recommend this and would buy it again.
Marlene Castro –
Love this product
This is a great collar I really recommend it. I love how quickly it alerts you when dog leave the safe area. It’s very durable and the battery lasts more than a week. It also measures their nap and scratching during a day.
elba –
Smart Dog Tracker Collar with GPS and 6-Month Membership Included
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.
Furb –
Doesn’t allow you to register to a Uk phone and then have to fight for your refund despite paying £10 for registered return. 3 weeks and still waiting.
Rusting water trough. –
Great collar. Easy to use app. Low profile.
Nick G. –
It doesn’t work in the UK
Maud Peters –
I was excited to try this collar on my foster dog who likes to roam further than he should. After setting up safe zones and following set up instructions, we went for a walk to check how it works. Sure enough, pup took off and disappeared for 20 minutes. The “Lost Mode”, which is supposed track in real time, dis not activate for 4 minutes. When it did, it showed my dog being located in the same spot where the lost mode was activated for the entire duration of him being gone. It only updated his location when he returned and the collar was next to my phone. Absolutely terrible! It defeats the whole purpose of the tracker. To add, cell service was fine. The app was able to track my phone location in real time…just not the collar/dog location. I will be returning the collar.
William –
So far so good but sometime the gps is not a bit slow and not a accuret but everything else is amazing