Active Noise Cancelling gives you the freedom to silence background noise or switch into Transparency Mode and hear everything you need to. Denon brought sound master tuning to even Denon smallest earbuds. The powerful yet detailed sound delivers strong dynamics and crystal clear vocals. Enjoy up to six hours of wireless listening from one full charge and up to 24 hours total by recharging the earbuds using the convenient charging case. Sweat and water-resistant without compromising sound or style, these earbuds have an IPX4 rating so you can keep listening during hard workouts or in the rain. Transparency Mode lets you simply tap the earbud, and the built-in microphone ensures you hear the outside world. Designed to feel comfortable and secure in your ear, these earbuds come with silicone ear tips in three sizes, ensuring you find the perfect fit.