Denon HI-FI sound is completely wireless Equipped with a large-diameter (11x10mm) dynamic driver that has been repeatedly auditioned and adjusted by the Sound Master to improve the degree of perfection. The audio codec supports AAC and SBC. Noise canceling & ambient sound mix function Equipped with a powerful active noise canceling function comparable to the overhead type realized by a team of engineers with abundant development experience. A new generation algorithm and feedback & feedforward 2 microphones effectively cancel ambient noise. When you want to hear the surrounding sounds, you can quickly turn it on by tapping the main unit. Light and comfortable fit With a mass of only 5.3g and a shape that fits naturally into the auricle, it provides a comfortable fit that does not get tired even when used for a long time. GOOGLE FAST PAIR compatible Put the earphones in pairing mode and tap the pop-up that appears when you bring them closer to your Android device to complete pairing. The sound master tunes carefully over a long period of time, aiming for "a sound that allows you to immerse yourself in music" or "a sound that you will want to listen to until the end once you start listening to a song".