Anker Soundcore Liberty 4 Overview:

Design

Anker’s Soundcore Liberty Liberty 4 comes with CloudComfort ear tips intended for a secure fit. It features a stem design, returning it from the Liberty 2 Pro. Further, it has a squeeze control that works just like pinching in Nothing Ear (1) or Ear (2).

Moreover, as for the case, the lid uses a sliding mechanism for opening and closing. Additionally, it is available in four different colors: Midnight Black, Cloud White, Sky Blue, and Nova Red.

Audio Performance

The Liberty 4 brings dual dynamic drivers, the first TWS to feature them alongside the stem. It upgrades the Liberty 3 Pro with the ACAA 3.0 Coaxial Acoustic System. Indeed, the earbuds continue to support the LDAC codec for Hi-Res audio.

Similarly, Soundcore provides HearID for personalized active noise cancellation. And yes, these earbuds feature six microphones, three on each earbud for ANC. Additionally, the call quality is emphasized, all thanks to the ENC algorithm embedded inside.

Similar to the AirPods Pro or even the AirPods 3, the Liberty 4 comes equipped with Spatial Audio for 360° immersion. Furthermore, Dynamic Head Tracking gives immersion an additional layer of realism by accurately tracking the movement of your head in real-time.

Heart Rate Tracking

It’s not a new idea to monitor heart rate with wireless earphones, but it’s uncommon to find earbuds like the Liberty 4 that can do it. The heart rate tracking works well with the wellness function in the Soundcore app, making it easy to monitor the data without any interruptions.

Battery life and Charging

The Liberty 4 provides different battery life depending on how it’s used and its features. It can play for up to 9 hours on a full charge during regular usage. However, if you enable spatial audio mode, the battery life decreases to 5 hours. Additionally, if LDAC mode is used without noise cancellation, it offers 6 hours of battery life.

When using only the ANC feature, these earbuds can last for up to 7 hours on a single charge. The included charging case even provides additional hours. In normal circumstances, the cell can fuel for up to 28 hours in Liberty 4 before needing to recharge.
Moreover, the charging case can rapidly charge the earbuds, giving you 3 hours of playback with just 15 minutes of charging time. You have options to use either a USB-C cable or a wireless dock to refuel it.