Products/GPS & safety
Fi Series 3 — GPS collar with a long battery
Gregory Greenstein·Editor, Petacent
Published September 20, 2026
Updated September 20, 2026
Pricing checked September 20, 2026
4 min read
Fi wins our GPS ranking because the battery story matches real ownership. The membership is the radio. Do not buy the collar as jewelry.
Pair it with ID tags and a microchip. A geofence tells you the gate failed; it does not install a gate. Walk gear still matters — see no-pull harnesses.
- Best for
- Dogs that can leave a yard or trail when you want tracking you are not charging every few days.
- Skip if
- You refuse a subscription, or you want health reports more than location — look at Whistle.
- Pricing note
- Hardware commonly ~$149. Membership often ~$99/year or ~$12/month. GPS does not work without a plan. As of September 20, 2026.
See Fi Series 3 official site
Product buttons currently go to official manufacturer sites. Amazon Associates and Chewy slots are empty until partner IDs are added — we will not invent them.