Dolby Atmos with Dolby Head Tracking - The LG TONE Free T90 is the world's first Dolby Atmos * wireless earbuds that enhance listening experiences with Dolby Head Tracking across all your favorite entertainment like music, movies, TV shows, and games. You can experience Dolby Head Tracking with your LG TONE Free T90. Premium Dynamic Sound - Dynamic and Downright Impressive The reinforced Graphene Speaker driver is made of a strong, lightweight material that delivers better overall audio clarity and reduced vibration so you can hear every sound come alive to feel like you're front-row and center-stage. Clear Chat with Voice Sensing - Ready to Chat Dive into conversations clearly with a 4-mic system that recognizes what type of conversation you're having and adjusts the microphone to the just-right noise cancellation. Adaptive ANC - A Smart Earbud From the noise on a busy street to the quiet of your office, our adaptive ANC technology knows you're wearing your earbuds and detects the noise around you to adjust the sound just right every time. So whenever there are changes to your environment, the earbud technology adapts to ensure clear, crisp calls to help you hear everything better. Performance Fit -All Day Comfort Our ergonomic design lets you comfortably wear your LG TONE earbuds all day long.. Meridian Audio Technology - Professional-Quality Hi-Fi Audio Immerse yourself in rich, clear audio. A built-in equalizer delivers impressive bass and treble tones that sound like the live recording.. UVo+ - Kills 99.