Anker-branded soundcore has announced the Liberty 4 earphones. These earplugs have a different design compared to their predecessors and get a heart rate sensor. The earphones also support head tracking for spatial audio.
The have soundcore Liberty 4 ears under the ear tips a heart rate sensor that can measure heart rate and oxygen content. If you then connect the earphones to the soundcore app, you can view these values with this sensor. Anker emphasizes that this information is not intended for medical applications, but only for determining the ‘general condition’.
Also new is a built-in gyroscope, with which the ears can follow the movements of the head. For example, spatial audio should become possible, in which the sound adapts to the position of the head. The ears also have a new design, with stems attached to the two ears.
Like the Liberty Pro 3 earbuds, the Liberty 4 support LDAC and noise canceling. The new earphones offer 9 hours of battery life on a single charge, the included case can add 19 hours to this. With noise canceling these values become 7 and 24 hours respectively, with spatial audio they drop to 5 hours and 15 hours. A 15-minute charge provides up to 3 hours of listening time. The case can be charged with USB-C or wirelessly.
The earplugs are now available for sale in the United States in white and black. Here they cost 185 euros converted with VAT. The earphones are not yet for sale in the European webshop. The Liberty Pro 3 could be purchased through this store.