Fi Series 3+ GPS + Health Dog Collar, Gray, X-Large, 12-Month Membership | Smart GPS dog collar with live tracking, health & behavior, Escape Alerts, LED light. Waterproof and Apple Watch compatible.
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Availability:
In Stock.
Arrives
Friday, Aug 14
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Color: Gray
Size: X-Large
Features
- Real-time GPS tracking: See your dog's live location nationwide, so you always know where they are.
- AI-analyzed health & behavior monitoring: Track sleep, steps, overall activity, barking, licking, scratching, eating and drinking in the Fi app.
- Escape Alerts: Build custom virtual fences (Safe Zones) and get notified the instant your dog slips out, then follow them in real time.
- Built to last: Waterproof and LED-lit, with tug-resistant stainless steel and wireless charging.
- Works with your phone: Full iOS and Android app plus Apple Watch compatibility. Membership included.
Description
Fi Series 3+ Pink 6 MN Fi Mini Small Dogs 6 MN Fi Mini Cats 6 MN Fi Series 3+ Blue 6 MN Fi Series 3+ Yellow 6 MN Fi Series 3+ Gray 6 MN
Brand: Fi
Special Feature: Geo-Fence, Real Time Tracking
Connectivity Technology: Cellular
Supported Application: Apple Watch, Siri
Specific Uses For Product: Pet Monitoring
Package Dimensions : 9.13 x 6.65 x 2.13 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: #9,577 in Pet Supplies (See Top 100 in Pet Supplies) #5 in Pet Location Trackers
#5 in Pet Location Trackers:
Customer Reviews: 4.1 4.1 out of 5 stars (1,283)
Brand: Fi
Built-In Media: Charger, USB Cable
Unit Count: 1 Count
Manufacturer: Fi
UPC: 850064800609
Global Trade Identification Number: 09
Number of Items: 1
Model Number: FCB3
Mfr Part Number: FCB3
Warranty Description: 1 Year Warranty
Additional Features: Geo-Fence, Real Time Tracking
Connectivity Technology: Cellular
Supported Application: Apple Watch, Siri
Specific Uses For Product: Pet Monitoring
Battery Average Life: 90 days
Compatible Devices: Smartphone, Personal Computer, Tablet
Battery Capacity: 285 milliamp_hours
Item Weight: 77 g
Enclosure Material: Plastic
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Aug 14
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
I recently purchased the Fi Series 3 Smart Dog Collar for my energetic pup, and I couldn’t be more thrilled with the experience! This innovative collar combines GPS tracking with activity monitoring, making it an essential tool for any dog owner who values their pet's safety and well-being. **Design and Comfort:** The collar is sleek and stylish, available in various colors to suit your dog's personality. It’s made from durable materials that stand up to the wear and tear of daily dog adventures, and my dog seems comfortable wearing it throughout the day. **GPS Tracking:** The GPS feature is a game changer! I can track my dog’s location in real-time using the accompanying app. The geofencing feature is fantastic, alerting me if my dog wanders beyond a designated safe zone. **Activity Monitoring:** The activity and fitness monitor is another highlight. It tracks my dog's daily activity levels, encouraging us to engage in more playtime and exercise. The app provides insights into my dog’s activity trends, helping me to keep him healthy and active. **Battery Life:** I was pleasantly surprised by the battery life. With regular use, the collar lasts for several weeks on a single charge, which is impressive for a device with such advanced features. This means less time worrying about charging and more time enjoying walks and play. **App Integration:** The Fi app is intuitive and user-friendly. I appreciate the detailed reports and the ability to set goals for my dog’s activity levels. It’s also easy to navigate, which makes checking in on my dog's status a breeze. **Conclusion:** Overall, the Fi Series 3 Smart Dog Collar is worth every penny. It’s not just a collar; it’s a comprehensive tool that enhances the safety and health of my beloved pet. If you’re looking for a reliable GPS tracker and activity monitor, I highly recommend giving this collar a try. It’s a must-have for any dog owner!
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Reviewed in the United States on December 14, 2024 by Amazon Customer
I waited a few days to write a review because I wanted to really test it out before I formed a decision. My first impression was that this is a quality product. It was packaged nicely with easy to follow setup instructions. I found the material, fit, and size to be perfect for my 35lb Frenchton. I was hesitant about an app though, but I have to say i have become quickly obsessed with it! I love seeing his progress towards his activity goals and how he’s measuring up against other similar breeds as well as dogs in my area or across the entire Fi dog community. It really is a community of people who love their dogs and care about their well being. You can share videos and photos of your own dog and see other dogs photos and videos. It’s similar to a social app where you can follow other dogs progress as well as your own. The most impactful thing for me was seeing that maybe I needed to step up my dogs activity level a bit more to give him a balanced day of rest and action. He naps a lot and now I am realizing he needs a bit more play and walks to reach his daily activity goal to keep his streak up! We live in the woods so I am happy it has the ability to track his location in case he wanders outside the safe zone. Overall I am really enjoying the experience and I feel like my dog is going to be healthier and happier for it. I’m looking forward to seeing how he ranks amongst his peers over the coming days and weeks as he increases his steps and daily activities. I’m glad I gave this a try!
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Reviewed in the United States on October 19, 2024 by Melissa Lestage
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 by Spectaclephoto
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: 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
Set up was extremely easy. I like the diversity in mapping out your safe zone. The charger is really neat. Just like a cordless iPhone charger! Just set it down and charge. I have a 60lb American bulldog and the Large fits her perfect. Edit to OG post: My senior dog has dementia and likes to wander sometimes. I love the app to be able to see her sleeping habits, when she’s most active, and of course her location. The battery life is amazing. I swear I can go a week or more with out charging. That is IMPRESSIVE. This thing literally saved my dog’s life. One day I got a text AND app notification that she had left home. I pulled over and zoomed in on the map and saw her and a body of water. I instantly called my mom that lives a mile down the road to go and get her because I was about 10 minutes away. You're able to add an emergency contact and it will share the dog’s location as well as alert them when they’ve left home so you’ve always got a backup person. I did that and she was able to find her easily. By the time I was almost home my mom had called and said she had to jump IN THE POND and get her because she was bobbing up and down. She said if she wouldn’t have gotten there when she did then she definitely would have drowned. OBVIOUSLY IM GIVING A FIVE STAR REVIEW. This is an amazing price for this collar. I also decided to get a “shock” collar for her too. The one I purchased was $600 and isn’t worth that much money at all. I WOULD pay $600 for the Fi collar. If your dog likes to venture out, GET THIS. It could save their life 😊
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Reviewed in the United States on March 2, 2025 by Hailes
Color: Blue
Size: Medium
My dog Max is a bit of an escape artist. The last time he got loose, he wandered into a neighborhood women’s book club, where he acted as though he were starving and was promptly lavished with food and attention. It was a funny ending, but it also made me realize that I needed a reliable way to find him quickly if he ever escaped again. Choosing a GPS tracker was not easy. There are essentially three major brands in this category, and Fi appeared to be one of the leaders. After reading through a great many reviews, I chose the Fi Series 3+ because it seemed to have the fewest one-star ratings. More importantly, many of those negative reviews appeared, when read carefully, to involve setup mistakes or user error. With some competing trackers, the negative reviews seemed more likely to point to actual problems with the products themselves. My Fi Series 3+ Smart Dog Tracker Collar arrived within two days. I was immediately impressed by the packaging, which was right up there with what you might expect from an Apple product. The instructions and setup process were equally impressive. Everything was so clear and precise that I was able to get the tracker working without having to backtrack, reread anything, or troubleshoot a single step. That is certainly not the case with many technology products, and it demonstrated the company’s attention to detail. I prepaid for 12 months of service so I would not have to think about monthly payments. I was also pleasantly surprised to see that the Fi app had a 4.7-star rating in Apple’s App Store. I then added the App to my wife’s phone. After all, if Max escapes again and crashes another women’s book club, I want both of us to receive the alerts. Her phone paired with the tracker quickly and easily. The most challenging part of the entire setup was attaching the tracker to the collar, and even that was only because the attachment mechanism is extremely well made. There is a spring-loaded flap that is the same color as the latch. After removing the small protective plastic covering, you need to flip open the spring-loaded latch before sliding it over the tracker. Once you understand that, you are off to the races. The next step was testing it. This was especially important to me because the most common complaint about dog GPS trackers in general is that they supposedly fail at the exact moment you need them. I left my phone in the driveway, told my wife where I was going, and walked down to the end of our cul-de-sac carrying the tracker. When I returned about two minutes later, my phone had received two notifications: one when the tracker passed the end of the driveway and another when it reached the end of the block. Both notifications included addresses, and both locations were perfectly accurate. My wife’s phone received the exact same updates. She was impressed, I was impressed, and I believe most buyers will be impressed as well. Spending a little less than $200 to help ensure that your dog does not end up lost—or become coyote food on some random evening when he decides he is in the mood to explore—is money very well spent. So far, I am extremely pleased with the Fi Series 3+ and feel much better knowing that, should Max make another great escape, we will have a much better chance of finding him quickly.
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Reviewed in the United States on July 23, 2026 by CenteredOne
This is the 2nd Fi 3 I've purchased as I needed it for my (at the time of purchase)8 month old puppy that is an escape artist and social butterfly. My 3 year old, Axel has had his for over a year and I really like the peace of mind knowing he's wearing a gps collar. It's really easy to set up and the app is super simple to navigate. If you purchase a longer subscription especially with multiple dogs the value is pretty decent as well. The only issue I have is the collar Fi sends with the gps unit. For larger dogs, or a dog that wears a wider collar I believe they are just not wide enough. Also, the gps unit is attached to the fi issued collar as part of the collar its self similar to how the buckle is attached. I don't like the stress that puts on the unit so I have purchased other collars from fi approved makers that attach the unit on top of the collar. No issues with it falling off my boy's collars and they are ROUGH players both weighing over 80 pounds and Axel thinks he's part fish and has done a ton of swimming wearing his. the "track lost dog" setting has worked brilliantly when Tonka has taken off on me and is running amok through our neighborhood. Not sure on the actual distance range as I live on a dead end road that's probably quarter of a mile long with about 15 houses on larger lots (old neighborhood without cookie cutter houses jammed in next to each other and every house has an actual front and back yard) give or take and I've always located him on our street within minutes of noticing he's escaped. The light you can activate has been a life saver when trying to find him in the dark. Anytime I've taken him to training classes, dog competitions or miles away from "home base" ive been able to look at the route and stops made according to the fi. I also really like the health and sleep tracking and the ability to add other ppl including your dog walker to your dog's profile and they have access to the info. My father and boyfriend are on my dog's profiles. I would definitely recommend fi as a great option for a dog tracker gps.
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Reviewed in the United States on December 10, 2024 by brynn sauve