Denon PerL Pro True Wireless earbuds let you create a personalized sound profile via Masimo Adaptive Acoustic Technology (AAT) for audio that is perfectly tuned to you. Add in CD-quality sound from Qualcomm aptX lossless technology, spatial audio from Dirac Virtuo, and Denon signature sound quality for an unrivaled wireless audio experience. Confidently take calls with best-in-class voice audio. Use the Denon Headphones app to create your profile and fully customize your listening experience. Plus, with eight hours of earbud battery life—three additional charges from the case and wireless case charging—you can keep the music going all day.