Anker Liberty 4 Earbuds Launched with ANC and Spatial Audio

Anker has launched a pair of Soundcore wireless earbuds, called the Liberty 4, which feature ANC, Spatial Audio and heart rate monitoring capabilities.

Anker Soundcore Liberty Series, Active Noise Cancellation, Wearables

Sat Oct 1, 2022 - 11:00

Anker Liberty 4 Earbuds Launched

Wireless Earphones with ANC and Spatial Audio

Anker has launched a new pair of wireless earbuds under their Soundcore audio device brand, called the Anker Liberty 4. These wireless earphones feature a lightweight design and claim to come with lots of unique features such as adaptive noise cancellation, hardware based spatial audio and even heart rate monitoring.


Design and Specs

The Liberty 4 earbuds feature a sturdy and lightweight plastic body, which houses a special ACAA 3.0 Coaxial Acoustic System that uses two dynamic drivers placed on the same axis to produce high-res sound output. The company claims that it can deliver three times the clarity when used in LDAC mode.

The body of the earbuds has been designed to fit perfectly in the human ear and maintain a proper audio seal even under constant movement. There are no physical or capacitive buttons located on the earbuds themselves, so you will have to control all the features using the Soundcore app.

While there is multi-device connectivity available thanks to the inclusion of Bluetooth 5.2, we do not recommend using it as it restricts you from using the LDAC mode. Another big caveat is the lack of any IP rating for dust or water resistance. This is a must-have feature in wireless earphones these days, and not having it in this model might make it a potential dealbreaker for some fitness enthusiasts.


The earbuds feature 6 strategically placed microphones to enable voice calling and ANC functions. One thing to keep in mind is that what you get is not regularly active noise cancellation but rather a HearID Adaptive Noise Cancellation system. It uses the microphones to constantly monitor the surrounding noise levels and adjust the noise cancelling features accordingly.

The system does this with the help of a special AI noise reduction filter to make it easier to hear and speak in noisy environments. The AI algorithm also enables transparency and white noise modes for more usability in office and outdoor settings. Over time, this AI algorithm will start to understand your surroundings and create specific equalizer profiles for specific types of environments.

Similarly, you will also be able to create unique profiles for different types of content, such as Music and Movie Modes, which will be tuned to present the respective content in the best possible settings.

Spatial Audio

To provide a much more immersive experience when listening to music and movie audio, the earbuds also feature spatial audio capabilities. This is a hardware-based system which uses a gyroscope to keep track of your head movements. This way, the system knows exactly what direction you are facing and can automatically adjust the soundstage to reflect the change. The company is calling it dynamic head tracking, and it works seamlessly with all sorts of audio input streamed through the Soundcore app.

Heart Rate Monitoring

There is a special heart rate sensor located on top of the right earbud. The sensor is hidden beneath special dual-layer flexible eartips, which have been kept transparent to allow light to reach the sensor for easy visibility and proper functionality.

In order to use the sensor, you must first activate it through the Soundcore app. A red light located on the sensor will light up to let you know when it is active and functioning. You can use the sensor to check not only your heart rate but also measure your blood oxygen levels.

The results will be displayed in the app itself, which can be used to keep a record of your testing. Although, the company has already included a disclaimer that these functions are meant only for general health and fitness use. So, don't expect them to deliver medical-grade accuracy.

Battery Life

The in-built battery can deliver up to 9 hours of non-stop listening on a single charge. This time can be bumped up to 28 hours with the inclusion of the wireless charging case. However, if you activate any of the special features, these figures go down drastically. For example, simply turning on the HeadID ANC drops the battery life to 7 hours, while including the spatial audio features brings it down to barely 5 hours.

While we don't know how much battery is used by the heart rate sensors, chances are it will have some impact if you use it at a high frequency. Thankfully, you can easily charge up the earbuds back to full, with support for USB-C-based fast charging, which lets you get up to 3 hours of listening time in just 15 minutes.

Price and Availability

The Liberty 4 earbuds are available in Midnight Black and Cloud White colours and can be purchased from the Soundcore website for a starting price of around $150.


Related Articles

HONOR Band 7 NFC launched

HONOR unveiled the HONOR Band 7 NFC, a new wearable device that, as its name suggests, is a variation of the Band 7 fitness tracker that supports NFC communication. The HONOR Band 7 NFC has an array of useful features and is targeted towards the audience who love wearing stylish ...

Read More about HONOR Band 7 NFC launched

HONOR Watch GS 3i Smartwatch Launched

The HONOR Watch GS 3i smartwatch has been introduced by the tech giant HONOR with a wide number of updates and features. The Watch GS 3i is an affordable smartwatch with a variety of sports modes, a long battery life, and health monitoring capabilities. Let us dive into more deta...

Read More about HONOR Watch GS 3i Smartwatch Launched

Iris Smart Ring Unveiled

The Iris Smart Ring has been launched in the international market with a financing campaign on Kickstarter. The wearable can be used to take your temperature and includes a miniature medical-grade blood pressure sensor and pulse oximeter. The less expensive model has an associate...

Read More about Iris Smart Ring Unveiled

Xiaomi Watch S1 Pro Launched

At MWC 2023, Xiaomi unveiled the Watch S1 Pro, a smartwatch with a vintage aesthetic in addition to the Xiaomi 13, 13 Pro, and 13 Lite. This wearable has a classic appearance with a brown leather strap and a silver case, making it ideal for people who prefer analogue watches to d...

Read More about Xiaomi Watch S1 Pro Launched

Sony WH CH720N Headphones Launched

The Sony WH-CH720N over-ear headphones have been introduced to the market by Sony, one of the top choices when it comes to audio products. These recently unveiled headphones by Sony are similar to the WH-1000XM5 flagship wireless headphones in some important ways. Let us have a c...

Read More about Sony WH CH720N Headphones Launched

Amazfit Falcon Smartwatch Launched

The Amazfit Falcon smartwatch went on sale the previous year in a few selected countries. Now it has been launched in the international market. It is a smartwatch which can give tough competition to brands like boAt, Noise, Zebronics and more. Let us have a look at the complete l...

Read More about Amazfit Falcon Smartwatch Launched

Samsung Patents Smartwatch With Built-In Projector

About ten years ago, Samsung was among the first companies to market a smartphone with an integrated projector. A recent patent application implies that Samsung now wants to bring this feature to its wearables as well. In a patent application, a hypothetical wearable device that ...

Read More about Samsung Patents Smartwatch With Built-In Projector

Corsair HS Series Headphones Launched

The HS65 and HS55 wireless headphones from Corsair feature premium audio, cutting-edge technology, and a stylish appearance. These will be a premium set of headphones with amazing features to look out for, especially for users who love gaming for long hours....

Read More about Corsair HS Series Headphones Launched

Sony WH-CH720N Headphones Coming Soon

Following a previous breach in which a number of brand-new Sony audio goods leaked, some very conclusive information on the brand-new WH-CH720N wireless headphones has just surfaced. The unintentional disclosure seems to corroborate that the new model of headphones is a direct re...

Read More about Sony WH-CH720N Headphones Coming Soon

Samsung Galaxy Watch 5 To Get Period Tracking

Samsung smartwatches now have temperature sensors thanks to the Samsung Galaxy Watch 5 series. The sensors did not do anything when the smartwatches were first introduced last year, which was the only drawback. With the help of the fertility app Natural Cycles, Samsung will soon ...

Read More about Samsung Galaxy Watch 5 To Get Period Tracking

Leave a Comment

By clicking the submit button below, I hereby agree to and accept the following Terms and Conditions