Halo 4 vs Halo 3

What's New in Halo 4?

Halo 4 is our thinnest and most comfortable smart ring yet. It's 40% lighter and slimmer than Halo 3, making it feel even more like everyday jewelry.

We've also upgraded the internal sensors and tracking technology to deliver improved accuracy for sleep, heart rate, stress, and overall wellness insights—while maintaining the same long-lasting comfort you expect from Halo.

Halo 3 remains part of our lineup and is still available for purchase in select styles, including our Flat Top and Concave designs. While Halo 4 introduces a lighter, slimmer profile with upgraded internal tracking technology, Halo 3 continues to offer the same core wellness tracking experience in the signature styles many of our customers already love.

Whether you prefer the latest Halo 4 or the distinctive look of Halo 3, you can choose the design that best fits your style.