You walk where phones lose signal. Any cellular tracker needs a network to send a live location.
The answer in 20 seconds
Dog bolts and your phone has to find him.
Fi Series 3 is a GPS collar, so the tracker is already on him.
The battery lasts up to 3 months and escape alerts ping your phone. It needs a Fi membership and replaces his collar. Can't swap his collar? Clip one on instead.
In this guide
Gate swings open, dog gone, and your phone is the only search party you have. Fi Series 3 is the GPS collar built for that moment: the tracker is the collar, so it is already on him.
It needs a Fi membership and replaces the collar he wears now. Want to keep his collar? The clip-on near the bottom goes on it.
Fi Series 3: the collar that is the tracker
Fi skips the clip. The tracker is the collar, so a dog who bolts is never out there without it.
Fi Series 3 Smart GPS Collar
Why dog owners pick it
Charges about 4 times a year: the battery lasts up to 3 months
Keeps working in water: IP68 and IP66K, down to 50 meters (Fi's rating)
A stainless steel frame built for tug-of-war (Fi says 500+ lbs resistance)
Wireless charging, no tiny port to fiddle with
Fits XS to XL dogs
LED lights for the dark
What to know first
It replaces his collar, so the tracker can't move to another one
Runs on a Fi membership: the collar does nothing without one, and Fi sets a 6-month minimum on a first term
Fi now calls it the Series 3+, and so does the Amazon listing. Same collar, same membership. Check size and color on the listing.
Before you buy: three checks
Run these three before you buy.
Use Fi's fit tool on its collar page and pick the size for his neck. Fi says the design suits XS to XL dogs.
Decide if you are ready to swap his collar. Fi is the collar, so his old one retires.
Read Fi's membership page and pick a 6-month, 1-year or 2-year plan. The device does not run without a membership.
A collar he wears every day beats a clip-on he leaves at home.
The membership: what it covers
You buy the collar once and pay for the membership to run it. Every membership includes the dog's personal app, an extended warranty that covers defects and malfunctions, and customer service by phone, chat and email. One account tracks multiple dogs and has unlimited users, so the whole household can watch the map.
Your dog backs out of collars. A tracker on a slipped collar finds the collar, not the dog.
Rather keep his collar? Try a clip-on
The Tractive DOG 6 clips onto the collar he already wears, and its Live Mode updates every 2-3 seconds during a search. It trades Fi's 3-month battery for a collar you keep: the battery lasts up to 2 weeks with Power Saving Zones on. Side by side: Fi Series 3 vs Tractive DOG 6.
Tractive DOG 6 Smart GPS Tracker
The catch
Traveling? Check Tractive's coverage list before the trip.
Skip it if
You won't pay for a subscription. Tractive needs one. The AirTag holder doesn't, but the AirTag has no live GPS.
Fi Series 3 is the pick for a dog who gets out. The tracker is the collar, the battery lasts up to 3 months, and one membership covers the whole household. Stuck with his own collar? Clip on the Tractive DOG 6 instead. See every option in Best GPS dog collars and trackers.
