Fi Series 3+ GPS Collar
The escape-prone adolescent — live nationwide location, geofenced escape alerts and a stated battery life measured in months
Fi Series 3+ GPS Dog Collar & Tracker, 6-Mo Membership Included, Pink L
What this costs to keep using: About $15.75 a month. The collar does not work without a Fi membership. Fi's own store lists prepaid memberships at $99 for six months, $189 for a year and $339 for two years, so a year costs about $15.75 a month on top of the hardware. Over three years the membership is several times the price of the collar. Fi Series 3+ Smart Collar — membership options
The variant we link: PinkOne Amazon page often holds several sizes; check the selected option before you buy.
Amazon links earn us a commission; it doesn’t change what we recommend.
Price checked 2026-09-19T02:41:17.290920+00:00. Amazon prices change often — the listing is the truth.
Suits these stages
- Who it’s for
- The escape-prone adolescent — live nationwide location, geofenced escape alerts and a stated battery life measured in months.
- Who should skip it
- You will not renew the membership. The collar's tracking stops being useful when the plan lapses.
The verdict
The tracker built as a collar rather than a pod clipped to one, which is why it stays on. Fi state live nationwide location with no range limit, escape alerts when a dog leaves a drawn safe zone, and Lost Dog Mode that switches to rapid updates so you can follow a path rather than refreshing a dot. Activity, sleep and behaviour monitoring come with it, which quietly turns into a useful long-term record — a change in resting patterns is often the first sign an older dog is uncomfortable. IP68, a stainless frame, an LED for night visibility and wireless charging. Six months of membership is included at this price; budget for renewal. Owners praise the battery life and setup, and split on GPS accuracy and value — which is fair, because coverage varies by area.
Drawbacks
- Membership renews after the included six months
- Accuracy reports vary with local cellular coverage
Researched from the manufacturer’s listing, its published specifications and what owners report. We do not test products on dogs.
WagScore
62out of 100- Owner satisfaction
- 48
- Stage fit
- 94
Owner satisfaction from the product's Amazon star rating and review count; stage fit from our own assessment of how well it suits a dog at adolescent, adult stage.
What the listing says
- Geofenced escape alerts and a rapid-update lost mode
- Built as a collar, so there is nothing to fall off
- Activity and sleep trends give a long-term health record
Specifications
- Battery Life
- Up to 3 months
- Connectivity
- LTE-M + GPS + Wi-Fi + Bluetooth
- Water Resistance
- IP68 fully waterproof
- Geofence Alerts
- Yes, customizable safe zones
- Weight
- 1.5 oz tracker module
- Size
- Not stated
- Material
- Not stated
- Colour
- Not stated
- Pieces in the pack
- Not stated
- Dimensions (H × W × D)
- Not stated
- Weight capacity
- Not stated
- Warranty
- Not stated
- Model
- Not stated
- Manufacturer
- Not stated
- Part number
- Not stated
- First listed
- Not stated
Specs come from the manufacturer listing and Amazon’s public product data. A field that reads “Not stated” is one we have not verified — not one the product lacks. We research and analyse; we do not test products on dogs.
Goes with this one
Inexpensive things that make this one work better — not a second version of the same purchase.
A cheap city-dweller's backup with no subscription — useful in dense neighbourhoods, unreliable in open country. · $24.00
Amazon links earn us a commission; it doesn’t change what we recommend.
If this one isn’t right
Skip it if: You will not renew the membership. The collar's tracking stops being useful when the plan lapses.
Our top pick on this shelf, if you would rather start from what we recommend first.
$55.30
A different kind of thing — gps containment fence rather than gps collar or tracker.
$999.00
← Back to the gps trackers comparisonNot sure what stage your dog is in? →
Guides that cover this
Where we wrote about this shelf at length — the reasoning behind the pick, not another version of it.
Gear
Pairs with
What tends to be needed alongside gps trackers — hand-picked adjacencies, not "customers also bought".
$59.99 4.6 out of 5 stars · 18,114
A tracker only reports where the collar is, so what it attaches to is part of the purchase.
$14.94 4.6 out of 5 stars · 18,587
Recall is the cheaper half of this problem, and the tracker is the insurance on it.
4Knines Rear Seat Cover (fold-down)
$99.99 4.7 out of 5 stars · 2,157
Escapes happen at doors and tailgates far more than they happen in fields.
The rest of this shelf
Everything else we currently recommend on the gps trackers shelf — the same need, Protect.
