Search  for anything...
Fi

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 (Pink, Small)

  • Based on 1,067 reviews
Condition: New
Checking for the best price...
$189.00 Why this price?
Save $20.00 was $209.00

Buy Now, Pay Later

As low as $31.50 / mo
  • – 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, Apple Pay, and PayTomorrow. 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

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.
Fulfilled by Amazon
Arrives Sunday, May 24
Order within 18 hours and 42 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Color: Pink


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


Special Feature: Geo-Fence, Real Time Tracking


Connectivity Technology: Bluetooth, Wi-Fi


Supported Application: Apple Watch, Siri


Specific Uses For Product: Pet Monitoring, Dogs


Package Dimensions ‏ : ‎ 9.13 x 6.81 x 2.01 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: #9,784 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 (1,235)


Additional Features: Geo-Fence, Real Time Tracking


Connectivity Technology: Bluetooth, Wi-Fi


Supported Application: Apple Watch, Siri


Specific Uses For Product: Pet Monitoring, Dogs


Battery Average Life: 3 months


Compatible Devices: Personal Computer, Smartphone, Tablet


Battery Capacity: 285 Milliamp Hours


Item Weight: 77 Grams


Enclosure Material: Stainless Steel


Brand: Fi


Built-In Media: Charger, USB Cable


Manufacturer: Fi


UPC: 850064800722


Global Trade Identification Number: 22


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, May 24

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Worth it!
Color: Blue Size: X-Small
Review Image by Mary Brown
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. ... show more
Reviewed in the United States on April 7, 2026 by Mary Brown
    • Much improved over series 2
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. ... show more
Reviewed in the United States on November 3, 2024 by Amazon Customer
    • Extremely important to keep ur dog alive
Color: Gray Size: Medium
I love how much this collar allows me to see if or when my dog moves and what kind of movement he does. Keeps track of where he has gone as well. If I can't keep track of him and he gets lost, I always find him! I love how it keeps asking if the location lines are true or not when we do walk outside of the boundary lines. ... show more
Reviewed in the United States on March 25, 2026 by Racquel Evans
    • Inaccurate GPS; not reliable for rural areas.
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. ... show more
Reviewed in the United States on December 19, 2025 by Syndel
    • Pretty good locator.
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. ... show more
Reviewed in the United States on March 11, 2026 by Marianne

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...