Halo Collar 4 - Halo Collar

The safest GPS dog fence ever created

The first and only dog fence with dual-frequency GPS

Halo Collar 4 combines data from L1 and L5 bands for the most accurate location.

Improved battery life

25% more battery life for over 30 hours between charges means less time on the wall and more time on your dog.

Perfect fit

No more guessing: the single-size collar is customizable to fit dogs of all sizes.

Smaller and lighter

33% smaller and 18% lighter for a more comfortable all-day fit.

Top safety features

Small yard, large property, or a perpetual traveler - Halo Collar keeps your dog safely contained in GPS fences you create and control anywhere in the world.

Practically limitless fence sizes. They can be as small as 900 sq ft and as big 1,200 sq miles.

Safe containment

Halo Collars receive four GPS updates per second, so you see your dog’s location in real-time all the time in the Halo app.

A dog can run more than 30 ft in 1 second, so more frequent location updates means you know where your dog is and that they are safe.

Real-time tracking

Always-on GPS with drift prevention, that uses our AI software to filter interference from obstacles.

Halo's independently verified GPS chip offers unparalleled accuracy within 1.4 ft of their true outdoor location.

PrecisionGPS™

No installation necessary: create GPS fences in seconds in the Halo app.

Simply enter an address or zoom in anywhere on the map, the Halo app creates a fence with one tap, then save your fence. Easily edit, pause and enable boundaries at any time.

Create Instantly

Halo lets you create fences in endless locations to keep your dog safe everywhere, storing GPS fences in the collar for use without Wi-Fi or cellular.

It auto-connects to all major global cellular carriers, including AT&T, Verizon, T-Mobile, and more.