Achieve dual listening where you can enjoy music and calls while listening to environmental sounds Unique sound conduit design provides a new listening experience that blends ambient sounds with sound from equipment (such as music) Compact size, light and comfortable to wear The structure does not block your ears, so you will not get tired easily. Equipped with microphone, volume, and multifunction keys on the cable section Mass: 18g Accessories: Ring supporter (S, M, L 2 each), carrying pouch