Denon PerL True Wireless Earbuds in White are a high-quality pair of earbuds that are perfect for music lovers. The earbuds feature Masimo Adaptive Acoustic Technology (AAT) that creates a unique hearing profile tuned perfectly to your hearing. The earbuds are hand-tuned by the Denon Sound Master to deliver a vivid and spacious sound quality. The earbuds have active noise cancelation that blocks out unwanted noise so you can enjoy your music or use Social Mode which lets in outside sound so you can have a quick chat or be aware of your surroundings 12. The earbuds have a personalized sound profile that can be created via the Denon Perl app, which measures your ears otoacoustic emissions to create your unique hearing profile. The earbuds have a battery life of up to 6 hours on a single charge and up to 24 additional hours from the case with wireless case charging. The earbuds come with four customizable touch inputs on each earbud that allow you to adjust your listening experience. The earbuds are water-resistant and come with ear tip sizes included (Extra small, Small, Medium, Large).