Unrivaled Sound Quality: A 13.4 mm extra-large dynamic driver reproduces natural and authentic sound true to original recordings. Ergonomic and Lightweight Earbuds: Weighing merely 3.8 g, these ergonomically crafted earbuds with a semi in-ear design ensure secure fit with added comfort. Instant Pairing: Instant pairing technology connects the earbuds automatically (after initial pairing) with your device once you open the case. Four ENC Microphones: Four built-in ENC (Environmental Noise Cancellation) microphones effectively suppress outside noise while amplifying your voice. Auto Play & Resume: The infrared sensor will automatically pause music playback when you take the earbuds out of your ears and resume when you put them back on.