The Crystal features ENC noise reduction and a sophisticated algorithm for better call quality. Enjoy immersive HiFi stereo sound with an extensive sound field and powerful bass. The Signature Sound mode is tailored for enjoying music, while the Hifi Bass offers a Bass effect suitable for your songs, ensuring a well-balanced sound for clear vocals. These earbuds feature touch controls on both buds for extraordinary call handling, playback control, and volume adjustment. Stay informed with the precise LED display showing the power status of both earbuds and charging case.