Masimo Adaptive Acoustic Technology (AAT) creates a unique hearing profile tuned perfectly to your hearing. Discover uncompressed sound with both lossless and spatial audio technologies. Choose quiet with adaptive active noise cancelation or hear your surroundings in Social Mode. Experience Denon signature sound quality, hand-tuned by the Denon Sound Master and described as vivid and spacious. With up to eight hours of earbud battery life per charge, three additional charges in the case, and wireless case charging, your earbuds are always ready to go. With Qualcomm aptX™ Voice for super-wideband (32kHz) voice calls and eight microphones for voice pickup, your voice calls will be clearer than ever. With Multipoint, you can connect to two devices at the same time. Create your unique profile, customize touch controls, select noise canceling or Social Mode, and more. Rated IPX4 to withstand your toughest workout or getting caught in the rain. Four fully customizable touch inputs on each earbud let you control play/pause, skip track, change volume, and more.