Aimed at those who want better sound whether traveling, working, exercising or relaxing, the Denon AH-C630W is designed to deliver class-leading audio quality from compact, lightweight earphones. Durable and sweat-resistant, these true wireless in-ear headphones deliver up to 18 hours of listening when charged with the clever charging case. True Wireless earbuds should fit perfectly to your ear without hurting or falling out. Denon AH-C630W have been carefully designed using extensive ear canal simulations to find the perfect shape and come with three different sizes of silicone ear tips. The built-in microphone enables you to take phone calls and participate in video conferences through the wireless earbuds. No cables, no hassle. The AH-C630W earbuds are IPX4 rated, meaning they are for safe wear even during rain or heavy workouts. Securely stores the earbuds and charges them from either the own builtin battery or through USB power connection. Works with any Bluetooth-capable playback device.The built-in touch sensor allows you to play music and take calls. Designed for those who demand superior audio whether commuting, working out or relaxing at home. Denon Sound Master tuning guarantees the renowned powerful yet detailed sound you are looking for in your music, entertainment and phone calls.