10 Best Fi Series 3 Smart Dog Collar of 2025

Tested and Reviewed: Top 10 Fi Series 3 Smart Dog Collar deals with expert ratings from 8.1 to a perfect 10

March 2026 Edition

Editor's Choice

9.7

Fi

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 (Gray, Large)

Free Shipping

Editor's bottom line:

“This fi series 3 smart dog collar is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

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.

Show Price

Picked by 397 people today

9.5

Fi

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, Large)

Free Shipping

Main Highlights

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.

Show Price

9.5

Fi

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 (Pink, Large)

Free Shipping

Main Highlights

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.

Show Price

9.2

Fi

New Fi Series 3+ Smart Dog Tracker Collar [6 Month Membership Included] GPS Tracker for Dogs with Health & Behavior Monitoring, Escape Alerts, Waterproof, LED, Apple Watch Compatible (Blue, Large)

Free Shipping

Main Highlights

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.

Show Price

9.0

Fi

New Fi Series 3+ Smart Dog Tracker Collar [6 Month Membership Included] GPS Tracker for Dogs with Health & Behavior Monitoring, Escape Alerts, Waterproof, LED, Apple Watch Compatible (Pink, Large)

Free Shipping

Main Highlights

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.

Show Price

8.8

Fi

New Fi Series 3+ Smart Dog Tracker Collar [6 Month Membership Included] GPS Tracker for Dogs with Health & Behavior Monitoring, Escape Alerts, Waterproof, LED, Apple Watch Compatible (Pink, Small)

Free Shipping

Main Highlights

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.

Show Price

8.6

Fi

Fi Mini GPS Tracker for Dogs — 12-Month Membership Included — Smart Pet Tracking Collar Attachment — Lightweight, Virtual Fences, Escape Alerts, Step & Health, Waterproof

Free Shipping

Main Highlights

LIVE GPS + LTE PET TRACKER: Track your pet in real time, even in remote areas, with advanced GPS and LTE-M technology. Its the perfect dog tracker and cat tracker for pets who love to explore. Plus, its a great Christmas and holiday gift for pet parentsone of those cat and dog Christmas gifts that keep on giving.
ESCAPE ALERTS: Custom build a geofence so your GPS pet collar sends instant alerts to your phone using the Fi app if your pet strays from a designated safe zone. Whether its a front door dash or back gate slip-out, youll be notified immediatelyso you can act fast and bring them home safely.
VERSATILE AND STYLISH: This sleek GPS pet tracker fits most collars and harnesses up to 1.25 wide. The low-profile slip-on style adds high-tech function without sacrificing your pets look. Its a GPS pet tracker thats as fashionable as it is functionalthe perfect stylish Christmas present for cat and dog parents.
SMALLER DESIGN: 80% lighter than Fi Series 3+, the Fi Mini is the ideal small GPS pet trackeroffering a comfortable fit for pets of all sizes without compromising on tracking power.
BUILT FOR ADVENTURE: Rain, mud, cold Holiday weather or wild trailsthis cat and dog tracking tracker is made to handle it all. With its waterproof (IP68-rated), rugged construction, the Fi Mini is built tough for any pet lifestyle.

Show Price

8.3

Fi

Fi Series 3 Charging Base - Bluetooth GPS Dog Tracker and Activity Monitor Charger

Free Shipping

Main Highlights

The base is used to recharge your Fi Series 3 Smart Collar. To recharge your collar, just place it in the recess on the charging base. The collar light should start pulsing blue to indicate that its charging.
Your Fi Base needs to be set up indoors, in an area where it can plug into an electrical outlet, connect to your Wi-Fi network, and should be placed in an open area where your dog frequently spends time.

Show Price

8.1

DOGISTRY

DOGISTRY The Fi Rockstar Collar - Crafted for Fi Series 3/3+ - Luxury Design Meets Smart Tech - Medium

Free Shipping

Main Highlights

Authorized Fi Partner. Custom Fit for Fi Series 3+: Purpose-built for seamless Fi device integration - delivering a flawless, secure fit & effortless setup. Crafted to complement your Fi tracker with precision & refined design.
Luxury Design, Elevated Craftsmanship: Crafted with premium black nylon & rose gold embroidery - merging durability with artistry. Each detail reflects DOGISTRYs devotion to design, quality, & thoughtful execution.
Tailored Fit for Balance & Ease: Contoured to your dogs unique shape - no bulging or twisting. Merges smart tech with effortless wear, redefining daily walks through elevated design and timeless sophistication.
Secure, No-Wobble Attachment: Engineered with precise connectors that keep your Fi tracker firmly in place - preventing slips or movement. Built for stability, confidence, and smooth motion in every adventure.
Cohesive Style with DOGISTRY Sets: Pair with matching leashes, harnesses, and accessories - a coordinated, design-led collection made for modern pet owners who appreciate elevated taste and effortless harmony.

Show Price

8.1

Stunt Puppy

Stunt Puppy Dog Collar, Fi Series 3 and 3+ Ready, Frolic Summer, Large - Compatible with Fi GPS Device (Not Included)

Free Shipping

Main Highlights

Large is 1" wide and adjusts to fit neck sizes 15.5" to 20.5" once the Fi unit is attached. Our Everyday Collars are made with polyester webbing, anodized aluminum hardware and USA-Made Duraflex acetal Buckles.
This Fi-ready, one-of-a-kind collar features fun patterns to attach to your current Fi GPS unit. Our Fi-Ready Collars are lightweight, colorful, and durable. This collar fits Fi Series 3 and 3+ devices, and the Fi GPS unit is not included. Not intended for tie-out.

Show Price

Our Best Overall Choice

Best Choice

9.7

Fi

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 (Gray, Large)

Free Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

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.

Show Price

Deals are Live

Special Amazon deal ends in: