Soundcore is Anker?s audio brand our signature sound is loved by 10 million+ people around the world. Liberty Air 2 is part of our Liberty series of true wireless earbuds. Diamond-Coated Driver: Liberty Air 2 wireless earphones take advantage of the ultra-light yet rigid structure of diamonds to create a driver dome that maintains its rigidity even when vibrating at high frequencies. It produces sound with flawless accuracy and treble that sparkles full of detail. Around its exterior is an elastic bass-maximizing ridge to reproduce thumping low frequencies. Up to 28 Hours of Playtime: A single charge gives you a full 7 hours of listening while the charging case extends it to 28 hours of playtime. And when the case needs a power boost simply set it down on a wireless charger. 4 Microphones for Crystal-Clear Calls: Each earbud is equipped with two microphones that utilize the latest cVc 8.0 noise reduction technology. Your voice is optimized and background noises are minimized so you sound louder and cle