Fi Series 3 Smart Dog Collar Review

Name: Fi Series 3 Smart Dog Collar
Brand: Fi

The Lab's Verdict

Best overall smart collar

Fi Series 3 Smart Dog Collar

The smart collar that nails the basics other brands fumble: weeks of battery, escape alerts, and serious activity tracking in a rugged, good-looking band. The default pick for active dogs.

Lab Score

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What we like

Multi-week battery life, class leading
Accurate activity and sleep tracking
Fast lost-dog escape mode
Durable, chew-resistant build

What we do not

Membership needed for GPS features
Premium up-front price

Total cost of ownership: this product has an ongoing cost beyond the purchase price — Membership required for GPS. Factor it into your decision.

Specifications

TypeGPS + activity collar
BatteryUp to multiple weeks
DurabilityRugged, water-resistant

Lab Score

View at Fi

Cross-shopping? Tractive vs Fi Series 3

Alternatives to consider

Best wireless fence collar

Lab Score

Halo

Halo Collar 4

A GPS collar and a wireless fence in one. You draw boundaries in the app and the collar keeps your dog inside them, anywhere, no buried wire. Premium price and a subscription, but uniquely capable.

View at Halo Review

Best for training

Lab Score

SportDOG

SportDOG 425X

Not a tracker, a trainer. A rugged, waterproof remote training collar with fine static, tone, and vibration control out to 500 yards. The pick for recall and field work, used humanely.

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This review reflects research and aggregated owner feedback; hands-on lab testing is rolling out. Modern Pet Lab is reader-supported and may earn a commission from the verified link above, at no extra cost to you. As an Amazon Associate we earn from qualifying purchases.