Fi New 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, Small)
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Availability:
In Stock.
Arrives
Sunday, Jun 7
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Color: Gray
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.
Description
Fi Series 3+ is the connected collar that provides continuous GPS tracking of your dog’s location (with no maximum range, unlike AirTags and Bluetooth). It delivers live, 24/7 coverage, instant Escape Alerts, and a dedicated Lost Dog Mode for reliable safety. Beyond location, Fi tracks steps, activity, and sleep, using machine learning to translate raw data into meaningful health insights. The device is built into a stainless-steel frame with IP68 and IP66K water resistance, an integrated LED light, and a battery life of up to three months per charge. Owners can also share access with family or caretakers for real-time monitoring. Fi Series 3+ combines durable hardware with intelligent tracking to keep dogs safe and give owners essential visibility.
Brand: Fi
Connectivity Technology: Bluetooth
Supported Application: Fitness Tracker
Specific Uses For Product: Pet Monitoring
Material: Plastic
Package Dimensions : 9.09 x 6.73 x 2.05 inches; 2.72 ounces
Item model number : FCB3
Batteries : 1 Nonstandard Battery batteries required. (included)
Date First Available : July 10, 2025
Manufacturer : Fi
Best Sellers Rank: #10,297 in Pet Supplies (See Top 100 in Pet Supplies) #6 in Pet Location Trackers
#6 in Pet Location Trackers:
Customer Reviews: 4.1 4.1 out of 5 stars (1,250)
Connectivity Technology: Bluetooth
Supported Application: Fitness Tracker
Specific Uses For Product: Pet Monitoring
Battery Average Life: 3 months
Compatible Devices: Smartphone
Battery Capacity: 285 Milliamp Hours
Item Weight: 77 Grams
Enclosure Material: Plastic
Brand: Fi
Built-In Media: Charger, USB Cable
Manufacturer: Fi
UPC: 850064800579
Global Trade Identification Number: 79
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:
Sunday, Jun 7
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.
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Top Amazon Reviews
Color: Blue
Size: X-Small
Works! I got it to make sure if my dog got lost I could find him ... As he is so adorable anyone that found him would want to keep him lol. I'm able to set up a home premeter to notify me when he leaves. It tracks steps and sleep. I find the steps helpful to remind me to get him moving and walk. Never had any issues and had it since Nov. I plan on keeping it as long as I have a dog. Worth the peice of mind.
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Reviewed in the United States on April 7, 2026 Reviewed in the United States on April 7, 2026 by Mary Brown
Color: Blue
Size: Medium
The system is easy to use. App works very well. We have a young Jack Russell who doesn't bark when distressed (too busy trying to figure it out by himself, like any good Jack) and a neighbor who abandoned the property and his large number of feral cats: eye candy for a terrier. Our pup was trapped inside of a large animal pen and doesn't bark so without the FI we would not have found him. Very reassuring to be able to accurately locate our doggy when he goes out of his territory, as well as to monitor his sleep and activity. Absolutely worth every penny!
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Reviewed in the United States on May 9, 2026 by Terry K
I’ve been exceedingly hopeful about this product for a long time now. When it connects to GPS, it’s helpful for at least getting you in a general range. It does not accurately let you know when your pet has left the safe zone at all. It also does not pinpoint your dog’s location on GPS; it only shows a general location, so you could be 500 to 1000 feet apart, which is a very big distance if you’re in a forest or field without a clear line of sight. It can take 45 minutes to get a notification that your dog has left the safe zone, depending on when it picks it up on GPS. The battery does last a while, but nowhere near the three-month claim. It is sturdy and it does stay on, however. The point of the light I don’t quite understand because it’s not bright enough if you’re looking for them at night. I think it’s just a fancy added feature. The subscription part, where you can see all of the steps that they take, is not really a bonus, the way I purchased it. It was part of a package deal, so I’m not sure if I have to keep it yet. I certainly don’t plan to because it won’t be worth the money for what I’ve gotten out of the product. If you’re looking for something that is going to immediately tell you when the dog leaves, give you a small area, as in less than a third of an acre for a safe zone, and pick up GPS signals in rural areas, you’re going to need to spend a lot more money or find a better product that I may not have found. This is not meant for rural areas or anywhere that has gaps in GPS. You’ll just be hunting for your dog for hours, walking in circles, playing chase, hoping this thing actually leads you somewhere.
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Reviewed in the United States on December 19, 2025 by Syndel
Color: Blue
Size: Medium
Love this collar! I have a beagle who is an escape artist! He’s had it for about a month. Last night he got out of the fenced in yard . The app on my phone immediately alerted me to the situation. It gave me his location. He was heading back to the house when I got him. He was hurrying because his collar was flashing a white light! No more lost dogs! Highly recommend!
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Reviewed in the United States on May 19, 2026 by Thebes
Color: Yellow
Size: Large
Works pretty good aside from the minutes it takes to update. My biggest problem is that this is not a breakaway collar and my Izzy got caught up on an old bolt under an old van on the ranch. She was able to slip the collar but I wonder how long she was stuck. That makes me a bit leery of it. We are wooded with a large boat barn and shop down on the lower property. It took us a good hour to find it because location is a bit delayed. They play rough all day down there in the woods and I never worried about them getting caught up but now I do.
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Reviewed in the United States on March 11, 2026 by Marianne
My husband and I rescued our dog Charlie 4 months ago. He’d been badly treated as a puppy and so sadly was still very anxious and skittish. We have been training him and he’s got better but at the start any sudden sounds or noises would trigger him, and he would immediately try to bolt. We live in the suburbs, but have a good sized property. Our yard is fenced all the way round, and all the dogs we’ve ever had have always loved it as they can roam off leash. That is except for Charlie…..who just tries to escape. A couple of close calls later, we realized that no doors could be left open, and someone would always need to keep an eye on him when he’s outside. I was still so worried that I looked into what we could use to track him so that I could have more peace of mind. We wanted to make sure that we got this decision right. So, we tested 3 of the best ones against each other: Tractive, Whistle, and Fi. I don’t typically leave reviews, but my husband said we should as it may help save another dog one day! We tested them over the course of 2 weeks, and focused on the following areas: 1. Location Tracking Accuracy 2. Escape Alerts (when your dog gets out) 3. Devices (size, weight, and comfort) 4. App (ease of use and other features) 1. Location Tracking Accuracy We really wanted a tracker that we could trust, so this was very important to us. We had to make sure that if Charlie was to get out unexpectedly, we would know exactly where he was to go get him. To test this, we did several walks with each of them where me or my husband would take Charlie on a walk away from the property and I would watch it on my phone to see where they were going. Some of these walks were around our neighborhood, and some were on hiking trails that were a bit more rural. Overall, there was some variation in the tracking, with the biggest difference being that the Fi and the Tractive are the only two that offer live location tracking, Whistle does not. Another thing we did learn about all of them though is that they will only be able to work in real time with cell service. We talked to support about this and it turns out that’s how they send the GPS location back to your phone. We thought this was important, and so focused on testing hikes that had spotty coverage to see which tracker would respond best. Fi was the only one that would give updates throughout the walk, even if they were intermittent. It seems that it repeatedly tries to ping the location back to your phone, whereas the others were only able to send some reports later on once we were fully in a cell service area. 2. Escape Alerts This was a quick one. I had my husband leave with Charlie and without his phone and I timed how long before I got a notification that he had left. We were trying to recreate a potential ‘escape situation’. This was the order we got our notifications: 1. Fi - 1 minute 29 seconds 2. Tractive - 3 minutes 47 seconds 3. Whistle - 4 minutes 13 seconds 3. Devices This is getting very long as I type it so I’m attaching some pictures of them alongside each other instead! The Tractive is the only one that attaches to your own collar and you don’t need to swap your collar out for, but the Fi is by far the smallest and lightest of the group. Whistle’s surprised us as we didn’t expect it to go so far back into the dog’s neck. 4. App We actually hadn’t thought about including this section when we first started testing, but after using them all for a few weeks we wanted to include it as they each have some cool features. All these companies did a good job with set up. They all took under 10 minutes to get up and running and were straightforward processes. Running through each of them in more detail below: Fi - tracks their location, activity, health and sleep. This is the only one to track sleep which was really cool to see. It’s also the only one with a built in LED light which was a great add for our nightime walks. It also had the longest battery life of all of them and was the only one that we didn’t need to charge over the 2 week period. Tractive - tracks their location and activity. Mainly focused on location but has a couple of neat activity features. Battery didn’t last very long. Whistle - tracks their location, activity and health. Definitely the most focused on health, and tracks things like scratching and licking. Didn’t find these that accurate though. Hope this helps some other dog moms. After the testing we decided to keep our Fi and return the others and are still very happy with our decision.
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Reviewed in the United States on May 14, 2024 Reviewed in the United States on May 14, 2024 by Spectaclephoto
We had three series 2 fi collars for a few years. Generally had been quite happy with them and the features/price until two of the collars started to come undone while walking the our dogs. One deteriorated to the point it came loose 4 times on one walk at which point I removed the collars and.sropped using them completely. The problem is that the fi receiver fits in line with the collar so if the attachment comes.loose the collar is no.longer connected, and the dog is now without a leash and without a gps tracker. I found companies that created a pouch or other holder for the gps , that would fit around a normal collar. This meant the gps receive is no.longer a critical link. With that in mind I decided to try upgrading to a fi3 series collar. Initially I was going to upgrade my subscription with a credit , but it actually turned out cheaper and quicker to.get the collar from Amazon. The new collar arrived today , nicely packed and ready to go. Setup of the base and collar weren't too difficult. I did find it went better if you didn't put the collar on the base during setup until prompted later. Also, it took a while to connect to my wifi properly. Be patient and it eventually sorts itself out. Have yet to try the tracking outside my safe zone but two things I like already. The attachments to the gps receiver are metal not plastic, and there is a magnetic door that holds things shut. Feels must more robust , and harder to come apart accidentally. Instead of popping out vertically it has to slide out horizontally before it comes loose. I am a little more.comfortable with this design and may skip using the pouches that I planned to. Secondly the led is a little more active and makes itself a little easier to spot due to the motion, not just the pulsing led. Hoping the gps tracking works well when I go on a walk tomorrow. Seems to find the house ok. Curiously it did record 430 steps just setting up and holding the collar. I'm claiming those steps and eating a donut to compensate. :) One thing that surprised me. The blue collar has a pattern on one side and is plain on the other. For some reason the pattern is on the inside when worn and there appears to be no way to flip it over. Indeed the photos on first website show the same, so it appears deliberate. I would jave thought the pattern would look decent showing outwards but maybe that's just me.
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Reviewed in the United States on November 3, 2024 by Amazon Customer
Color: Pink
Size: Large
I have an old Shepard mix rescue dog who likes to break out of our yard with our other dog. I’ve even had to circle the neighborhood looking for them at 3 am. I got this collar in hopes of finding them faster and alerting when they are out of the yard. I had to use it today. I realized the dogs escaped again and set clicked on the lost pet button. It took about 30 seconds for it to initialize the live gps, but when it did, I could see where she was at, and it sent me a phone notification of the address. I was able to find them quickly using this app. Please note, when not in lost mode the location only pings every 5 minutes to save battery. Also if the pet is close enough to the base it will appear at the base. Due to these two things it may take up to five minutes to get notified your pet is on the loose
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Reviewed in the United States on April 16, 2026 by Scott