New Fi 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 (Blue, X-Small)
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- – 6-month term
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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.
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Availability:
In Stock.
Arrives
Thursday, May 21
Color: Blue
Size: X-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. Its 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 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.
Brand: Fi
Connectivity Technology: RF
Supported Application: Find My iPhone, Fi app
Included Components: Charger, USB Cable
Battery Life: 3 months
Package Dimensions : 9.13 x 6.69 x 1.97 inches; 2.72 ounces
Item model number : FC3B
Batteries : 1 Nonstandard Battery batteries required. (included)
Date First Available : July 10, 2025
Manufacturer : Fi
Best Sellers Rank: #9,225 in Pet Supplies (See Top 100 in Pet Supplies) #7 in Pet Location Trackers
#7 in Pet Location Trackers:
Customer Reviews: 4.1 4.1 out of 5 stars (1,178)
Item Weight: 2.72 ounces
Manufacturer: Fi
Item model number: FC3B
Batteries: 1 Nonstandard Battery batteries required. (included)
Date First Available: July 10, 2025
Item Package Dimensions L x W x H: 9.13 x 6.69 x 1.97 inches
Item Weight: 77 Grams
Brand Name: Fi
Target Audience Keyword: pets
Warranty Description: 1 Year Warranty
Model Name: Fi Series 3
Color: Blue
Size: X-Small
Number of Items: 1
Included Components: Charger, USB Cable
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Thursday, May 21
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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- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing 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
Color: Pink
Size: Medium
I love this thing! My dog has been wearing it for 4 months now. I just wanted a tracking collar for my deaf dog for when she sometimes escapes the house/yard and got a lot more than GPS tracking. It tracks her step, scratching, barking, eating, licking, sleeping, drinking, everything! The tracking update is very accurate as well, notifies me the second she leaves the house. It’s not super heavy at all, feels like just a normal collar. My only complaint, the base for this thing always disconnects like once a week. Nothing dramatic happens when it disconnects, just loses battery faster, but a little annoying to keep having to reconnect
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Reviewed in the United States on February 14, 2026 by serenity fabian serenity fabian
Color: Gray
Size: Large
Best one out there. A lot smaller than the last one. Definitely recommend. I've had no issues with the positioning accuracy or disconnecting. Love the charging base.
Reviewed in the United States on February 15, 2026 by M. Wallace
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
I like the collar and tracker. The step counter is an effective tool for getting me to walk my buddy religiously. We now aim for an ambitious target and she is very enthusiastic about our long walks. (I am happy for her — and have already dropped a few pounds, myself.) So… gamification of walking is very positive. Accuracy of tracker is OK. The GPS feature shows individual walks, but the accuracy is good to only a few hundred feet. I’m a little worried about how effective my search attempt would be if my buddy runs off. So… accuarcy is OK. Sizing is a little limited. I probably would opt for the “Mini” next time. My buddy is 35lbs and the one-size-fits-all collar is too wide. That suggests that I should take it off inside the house, but then she might accidentally be let out without it. So… sizing is too likited.
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Reviewed in the United States on January 8, 2026 by Robert H. Mead
Color: Pink
Size: Large
I’ve had this tracker on my pup for almost a month and I am so impressed! It is so much more than just a GPS collar. I find it to be insanely accurate and so worth the price for the peace of mind that it brings me! I recommend this to all my friends with dogs!
Reviewed in the United States on February 3, 2026 by Cherie