Using state-of-the-art technology, the Soundcore Liberty 2 Pro Astria Coaxial Earbuds enhance your audio. Designed with Astria Coaxial Acoustic Architecture, they have an eleven-millimeter dynamic driver as well as a custom balanced armature. Thanks to this technology, these wireless earbuds harmonize treble and bass sounds while eliminating annoying interference. It’ll sound like you have the perfect seat at the concert with how well the Liberty 2 Pro earbuds enhance your music. And with four integrated microphones, these headphones ensure everyone hears you just as well. What’s more, they offer eight hours of playtime—enough to get you through your workday. Not only that, but they also come with a charging case that can power them up a full three times.