Anker's Soundcore Liberty 4 earbuds add spatial audio and heart rate tracking - The Verge

The latest version of Soundcore Liberty earbuds has a $150 price to go with active noise cancellation, heart rate tracking, spatial audio, and a wireless charging case that can keep them going for up to 28 hours.

Third-party gyroscopic head tracking is not “Spatial Audio”: the Anker soundcore Liberty 4 – kbps

Anker's new Soundcore Liberty 4 earbuds with ANC and Spatial Audio on sale for $130

Anker's Soundcore Liberty 4 earbuds add spatial audio and heart rate tracking - The Verge

Review: Anker Liberty 4 earbuds take on AirPods with ANC, Spatial Audio, and heart rate monitoring

Anker Soundcore Liberty 4 earbuds offer customizable audio + track heart rate continuously - Yanko Design

Anker Soundcore Space A40 Review: Great Budget Wireless Earbuds

First look - Soundcore Liberty 4, earbuds with heart rate tracking

Anker Debuts New Soundcore Liberty 4 Earbuds With Heart-Rate Monitor - CNET

Anker's Soundcore Liberty 4 earbuds can monitor your heart rate