Search  for anything...
Fi

New Fi Series 3+ Smart Dog Tracker Collar – AI GPS for Dogs, Health & Behavior Monitor, Virtual Fence, Escape Alerts, Waterproof, Apple Watch Compatible 12Mo Membership Included

  • Based on 982 reviews
Condition: New
Checking for the best price...
$189.00 Why this price?

Buy Now, Pay Later

As low as $31.50 / mo
  • – 6-month term
  • – No impact on credit
  • – 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

This item is eligible for return within 30 days of receipt

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, Nov 9
Order within 7 hours and 30 minutes
Available payment plans shown during checkout

Recently Viewed

Size: Small


Color: Gray


Features

  • NEXT-GEN GPS TRACKING FOR DOGS: Fi Collar Series 3+ is our fastest, most reliable smart collar yetfeaturing 2x improved GPS performance to locate your dog in real time, nationwide, with no range limits. Designed with upgraded antennae to keep you connected when it matters most.
  • ESCAPE ALERTS + LOST DOG MODE: Custom virtual fences alert you the instant your dog leaves a safe zone. If theyre on the move, Lost Dog Mode activates live tracking with rapid location updates so you can act fast. A pet GPS tracker for dogs that you can count on.
  • 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. It's more than a dog pedometer.
  • APPLE WATCH INTEGRATION + AI COMPANION: View live location, activity, and Lost Dog Mode from your Apple Watch. Plus, ask the built-in AI Companion anythingfrom behavior questions to care tips. This apple iphone pet tracker for dogs even delivers personalized reminders for vet visits, vaccines, and more.
  • SMART VET RECORDS: Never lose track of your dogs medical history again. Upload their health documents and let Fis GPS dog tag organize, summarize, and store themall 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, Dogs


Included Components: Charger, USB Cable


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: #8,419 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 982 ratings


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: Gray


Size: Small


Number of Items: 1


Included Components: Charger, USB Cable


Specific Uses for Product: Pet Monitoring, Dogs


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Nov 9

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

    • Fi Collar GPS TRACKING System *****
Excellent product. We have 2 collars and we started with version 1 and have upgraded to version 2 & 3.. battery last a couple of weeks and is reliable. Over the years we have had to track our dogs about 4 times, provides good tracking that can be followed very easily. We took the bases with us on vacay, set up the bases and did a safe zone worked great. Gives us peace of mind. I would purchase again. ... show more
Reviewed in the United States on July 25, 2025 by Tonysmith23
    • LIFE saver ⭐️⭐️⭐️⭐️⭐️
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 😊 ... show more
Reviewed in the United States on March 2, 2025 by Hailes
    • BEST GPS COLLAR ON THE MARKET
Bought this at the beginning of the year, this collar has given me peace of mind. Every walk, every play, every off leash experience I know it’s on her and worst case I could find her. She has yet to escape, but the gps tracking is accurate when we’re on walks. Getting notifications she left home with a trusted person is also nice. Notifications to the “escape” was quick. She was off leash and out of the safe zone for about a minute, attended. Easy to use app. Peace of mind doesn’t have a price limit for me, but it’s better when affordable. Collar was affordable and fair. One payment in the amount of my car insurance annually, and I like my dog a lot more than my car. Why I waited so long to review, durability- collar is extremely good material, fi device got a couple cosmetic scratches but we are very rough when it comes to playing, running and rolling. Personally I 110% recommend this, I’m glad I went with this option as far as tracking goes. I have recommended it to friends and family. ... show more
Reviewed in the United States on September 9, 2025 by Chelsey Mitchelson
    • Great Collar
Size: Large Color: Yellow
It is a great collar and has helped us find our Husky when she escapes the yard. It does tend to give false escapes from time to time. Overall it is awesome and puts our minds at ease.
Reviewed in the United States on October 26, 2025 by Amazon Customer
    • Excellent performance-Good gift for dog owners-It WORKS!
Bought as a gift for a friend whose dog got loose and made it home the next day. This collar's system has more than once since it's gifting helped the owner to retrieve his 10 year old dog. The dog did not normally "wander" but when a second, younger dog joined the family, it began. The ability to draw "home area" in the app saves the battery by not checking in as much (or so it seems) and the charging cradle makes the recharging easy for my friend. It appears you can add cradles if necessary to expand home reach, but check with the manufacturer on that. A great gift for any dog owner where there's a chance the dog may run.....notifications so far have been FAST, and I'd recommend it! There are many collars out there that do similar things, but when comparing recently with strangers who had a different brand, they liked the fact this one had more options on the App and that it seems to pinpoint more exactly than most. Peace of mind for dog owners for sure. ... show more
Reviewed in the United States on September 20, 2025 by W. RADIO

Can't find a product?

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