Black Music/Everyday In-ear Headset True Wireless Stereo (TWS) USB connectivity Bluetooth 5.3 Intraaural 20 - 40000 Hz Create a personalized sound profile with Masimo Adaptive Acoustic Technology (AAT) for audio that is perfectly tuned to you. Add in CD-quality sound from Qualcomm aptX lossless technology and spatial audio from Dirac Virtuo for an unrivaled listening experience.The evolution of personal soundThe only personalized earbuds that adapt to how you hear and support lossless audio over Bluetooth® wireless technology.Personalized soundMasimo Adaptive Acoustic Technology (AAT) creates a unique hearing profile tuned perfectly to your ears.Full, uncompressed audioDiscover uncompressed sound with both lossless and spatial audio technologies.Tune out the world or let it inChoose quiet with adaptive active noise cancelation or hear your surroundings with Social Mode.Denon signature soundExperience Denon signature sound quality, hand-tuned by the Denon Sound Master and described as v