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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
Add to Cart
Add to Cart
Add to Cart
Add to Cart
Add to Cart
Add to Cart
Customer Reviews
4.1 out of 5 stars 1,149
3.7 out of 5 stars 67
4.0 out of 5 stars 3
4.1 out of 5 stars 1,149
4.1 out of 5 stars 1,149
4.1 out of 5 stars 1,149
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. It’s 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 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.
7 reviews for 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 (Gray, Medium)
Add a review
$99.00
Dan –
Surprised my Frenchie needed the Medium Size, but great quality!!
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!!
stephen reiter –
Great and accurate
Awesome color, location is accurate and battery life is pretty good. Very similar to a human Fitbit the way it monitors steps and rest.
Kristen –
If You Love Your Dog, Get This Collar
This collar is fantastic. It is the same size as any regular collar and the tracking device is not bulky at all. Great range of colors although I chose the grey and the collar holds up well. I have had it for over a year and it has come in handy on the few occasions my dog got out and took himself for walks. One time I found him about 2 miles away! I never would have found him that time unless he came back in his own. I can’t say enough good things about this collar. It is easy to setup and accurate with tracking.
Storied Furniture –
8 Minutes, from Alert to back home safely! Best purchase ever!
Why did you pick this product vs others?:TAKE MY MONEY! Today, from moment of alert, to back home safely, 8 MINUTES! He was 1/2 mile away.My Houdini dog searches for ways to escape the property. He checks to see if I’m watching. If I am, he stops, if he thinks I’m “not”, he continues to search for a weak spot. Today, I went to the bathroom while he was doing the same, so I thought. To my chagrin, he woke up with a jailbreak on his mind, and a solid plan. To be clear, these are his adventures and my nightmares. He is a well pampered dog in a pack of 3. His best friend is a Belgium Maligator/GermanSheppard mix, his best escape buddy is a Yellow Lab, and he is a Border Collie/Golden Retriever mix. He could do my taxes if he had an opposable thumb! He is spoiled rotten, all the toys and play time he wants and a huge yard, 1/3 acre to play in and tear up, dig till his heart is content. It’s fenced to 5ft high. It’s a great life, and he will always come back… when he is tired, and I’m freaked out and scared. Usually 6-8hrs later. It would be different if we lived in a rural area, but we live between a super busy 4 lane road, and a lake, in central Florida. Road = trucks, Lake = gator snack given the right opportunity. Last time he escaped, I found him after hours of searching, with ZERO help from the AirPod. That’s when I learned he needed to be 200ft from an apple Bluetooth source to help. Waste of money. Lesson learned, I looked for a real time, or close to it, GPS tracker that was not bulky, that I could keep on the collar full time, didn’t draw the attention of the other dogs to bite at and chew off. Water resistent, durable and didn’t rely on Bluetooth or WiFi, to pick up a signal. F3 was it. I have one for every dog. This time, 8 minutes from alert to home. Gladly pay for the peace of mind. Just knowing which way to go is a huge help! Lots of ways a dog can choose. This makes my life easier, my dogs safer. 100% worth every penny.
Rostoldo –
General points
For all the others i tried i would say that the Fi was the one. If she is with me is almost always perfect. But if she is away i think it usually takes a long long time to update her position.Also the size is much better than other brands that has a huge and heavy bump, Fi is thin and discrete, that’s a great pro.The share feature for dog walkers and pet sitters is amazing, i had her staying with a pet sitter recently and he loved it and said he would suggest the Fi collar to his other clients.
Pvtworld –
This collar works great and can be trusted!!
I was skeptical due to the monthly subscription cost and initial price. Ordered collar and 6 month subscription to try out. The peace of mind you have from this collar is worth the monthly subscription. App is easy and fun to use. Follow other Fi dogs in the area or similar breeds on the Fi app. It has become a game to ensure she stays on streak and gets her steps. The additional information like sleep habits is very helpful.Found a central location for the base that has no issues with range or coverage on my 2 acres.Option to share the app with others and send out a “lost dog posse” is great!Bit of a wait when “lost dog” mode is activated. Most often located before the GPS comes online. However, GPS is spot on when it does.For every day the apps’ location shown is close to within 20 feet. My pup sleeps hard and does not wake when always when I call …. check the app and it says she is right here, have learned I can trust the app and avoid any panic.
LJ –
So many benefits and things to track
LoVE the options to track not only my pups location, but his steps, his sleep and set up safe zones for multiple locations. This little tracker holds a charge for weeks and is slim and great quality band.