Fi Series 3 Smart Dog Collar GPS Tracker - Long Battery, Waterproof

In this review the Fi Series 3 Smart Dog Collar stands out as a tracker for owners who need reliable, long-range location and meaningful activity data. The biggest reason to buy is the continuous nationwide GPS tracking combined with up to three months of battery life, which turns a single device into both a peace-of-mind locator and a fitness monitor for dogs that wander or are highly active.

Key Features

• Live GPS tracking: Precision GPS reports your dog's location in real time with nationwide coverage so you are not limited by nearby phones or short ranges.
• Escape alerts: Lost Dog Mode triggers when your dog leaves a set area so you can respond quickly and narrow down the search area.
• Health and activity monitoring: The device tracks activity, sleep, and behavior trends and presents them in the app for useful daily insights.
• Durable, waterproof design: Built with a stainless-steel profile and rated IP68/IP66K, the collar tolerates wet and rough conditions while resisting strong tugs.
• Long battery life: The Series 3 delivers up to three months on a single charge with the included wireless charging base, reducing frequent charging interruptions.
• Removable tracker and bands: The tracking device detaches easily from the collar band so you can swap sizes or replace the band without losing the electronics.

Who It's For

The Fi Series 3 is ideal for owners of medium to large dogs who spend time off-leash, live in rural areas, or have escape-prone pets; the nationwide GPS and escape alerts are especially valuable for dogs that roam beyond the reach of proximity-based trackers. It also fits households that want ongoing health and activity data to monitor fitness and sleep trends.

Owners of very small breeds should verify the XS or Small sizing and fit before purchase, and people who prefer a one-time purchase with no ongoing service fees should know a membership is required after the included six months.

Pros & Cons

Pros

• Reliable nationwide GPS tracking that works beyond the 200 ft limits of proximity devices.
• Exceptional battery life of up to three months on a single charge for low maintenance use.
• Durable, dog-centric construction and waterproof ratings for active pets.
• App-based activity and sleep insights that help owners monitor health and daily exercise.

Cons

• Continued use requires a Fi Membership after the free six-month period, which some owners view as an ongoing cost.

Specifications

Device type	Smart dog collar with removable tracker
Tracking technology	GPS with nationwide coverage
Water resistance	IP68 and IP66K
Battery life	Up to 3 months per charge
Tug resistance	400-lb rated
Membership	Includes 6 month Fi Membership with purchase

Our Verdict

The Fi Series 3 is a strong choice for dog owners who need dependable, long-range location and practical health tracking; its combination of continuous GPS, durable waterproof construction, and long battery life delivers real value. For owners comfortable with a subscription after the included six months, it provides peace of mind and useful activity data that justify the cost.

Frequently Asked Questions

Does the collar work nationwide?
The Series 3 uses GPS with nationwide coverage so it can locate your dog wherever service is available, not limited by proximity to other phones.

How long does the battery last between charges?
Fi advertises up to three months of battery life on a single charge with typical use and the included wireless charging base.

Is the device waterproof?
Yes, the tracker and collar are built with IP68 and IP66K ratings to withstand wet and rugged conditions.