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. Amazing sound quality with Denon Sound Master tuning Designed for those who demand best sound whether commuting, working out or relaxing at home. Denon Sound Master tuning guarantees the renowned powerful yet detailed sound you are looking for. Superior sound for your music, entertainment and phone calls. Sweat and water-resistant Carrying an IPX4 rating, these earbuds provide sweatand waterresistant without compromising sound or style. Don’t worry, go ahead and use them even during heavy workouts or in the rain. Extended battery life with convenient charging case Enjoy up to 4.5 hours of wireless Bluetooth music listening from one full charge and up to 18 hours total by recharging the earbuds using the convenient charging case. The included USB-C cable lets you charge the lithium-ion battery from any USB charger or computer USB port. Easy connection Works with any Bluetooth-capable playback device Light and ergonomic design 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. Clear voice for phone calls and video conferences The built-in microphone enables you to take phone calls and participate in video conferences through the wireless earbuds. No cables, no hassle.