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 (Blue, Medium)
Condition: New
Buy Now, Pay Later
As low as
$16.50
/ mo
Learn more
- – 6-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
30-day returns
Learn more
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.
View our full returns policy here.
Availability:
In Stock.
Arrives
Tuesday, Aug 4
Recently Viewed
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.
- 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.
Description
Fi Series 3+ Pink 12 MN Fi Mini Small Dogs 12 MN Fi Mini Cats 12 MN Fi Series 3+ Blue 12 MN Fi Series 3+ Yellow 12 MN Fi Series 3+ Gray 12 MN
Brand: Fi
Connectivity Technology: Cellular
Supported Application: Fitbit
Specific Uses For Product: Pet Monitoring
Material: Stainless Steel, Plastic
Connectivity Technology: Cellular
Supported Application: Fitbit
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: 850064800487
Model Number: Fi Series 3+
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:
Tuesday, Aug 4
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
- Zip Pay in 4
- Financing through Apple Pay
- Financing through Google Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Color: Pink
Size: Medium
Second Fi collar we bought for our second dog. It works great, easy to setup and use, and app had a very customer friendly UI. GPS tracking and health tracking seems to be working as intended. Overall, great smart dog collar.
Reviewed in the United States on June 29, 2026 by Jackie Xiong
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.
...
show more
Reviewed in the United States on March 30, 2026 by Amazon Customer
Color: Yellow
Size: Medium
Dont buy this unless you're desperate! So many things to mention. First off.. nothing worked the way the instructions indicated. You scan a qr code and a menu screen guides you they the set up. The device that actually tracks your pets location and goes on the collar doors not connect to the collar the way the instructions indicate. It didn't mention you can get stuck trying to do connect it the wing way as there are 2 ways to insert it. There is only one way it connects.. so confusing. Another problem i ran in to was the collar size. If you make a mistake on the size you can't order a collar only. You have to buy a whole new set with GPS tracker. I sized mine correctly but the cooler doesn't fit my pet so be careful. Once you get the collar activated which means getting the base connected to your home Wi-Fi your supposed to be done. My base station would not connect to my wifi So I had to do it manually. Once I was able to get it online... I cannot activate the collar which is required to be touching the base station. After I got everything connected and online and the geofence set. I get alerts saying that the pet has went outside the boundary. Even though the collar is still on the base station charging. Then I get alerts saying that the base station is disconnected. Even though it is connected and the Wi-Fi in the house is still on. So overall I don't like this product. I haven't been able to use it outside of the home because I had to go buy a different collar which is by a third party provider and expensive to be fi compatible.. bottom line is they made a proprietary collar and GPS that is nearly impossible to alter to get it to work with your custom collar. If you have your pet's name or anything else like that on there. I haven't even tried using customer service cuz I've been so frustrated with simply just trying to get this set up. Once I get my replacement collar and I'm able to go drive around to see if my pet is tracking in real time, I'll provide a second review and update.
...
show more
Reviewed in the United States on April 22, 2026 by Amazon Investor 53
Color: Blue
Size: Medium
A must for outdoor, active dogs. This tracker collar gives me peace of mind when I'm out in the fields with my over-active, bird obsessed GSP. I always know his distance from me and his position when he's out of sight. This is a great product. I've been using it for a year now and it's functioned perfectly. I won't take Beau (my GSP) out on walks or hunts without his tracker collar. A wise investment for sure. Worth 5 times what I paid for it in terms of peace of mind.
...
show more
Reviewed in the United States on May 25, 2026 by Kindle Customer
Color: Gray
Size: Medium
When I first got the collars I was super irritated as I could not get the base to connect to my internet and then I couldnt get the collar to connect to the base. After over a week of fighting with it, I finally got it to connect and its been great since. I have 2 of them, one for each of my dogs, and they have been great being able to watch their activities and locations. I will be getting new collars thst fits the Fi but these are OK for now.
...
show more
Reviewed in the United States on April 25, 2026 by Nicole Calvert
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
...
show more
Reviewed in the United States on March 2, 2026 by Sharon L Shanks
Color: Blue
Size: Small
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.
...
show more
Reviewed in the United States on March 10, 2026 by M. Botero
Color: Gray
Size: Large
Its a good tracking collar but, It needs a subscription to use the real time lost function. Also it has a safe zone size limitation. For houses or apartments in Puerto Rico doesn’t work very well because safe zone is designed to be a big area, to work a portion of your neighbors patio or house have to be setup as a safezone. Also if the dog crosses the barrier of the safe zone the collar, send the notification 2 minutes after sometimes it takes up to 10 minutes. This means when you notice the alert the dog may be miles away. Then you have to turn on the lost mode it also takes 1 minute to show pet location. It should be faster on crossing safe zone notification, be able to choose a smaller safe area in map, me faster on the live tracking location. If your dog is love giving type with any person it could be late if some one pick him up and throw the collar away. Otherwise it helps.
...
show more
Reviewed in the United States on January 23, 2026 by Emmanuel