With padded headband and earcups, these ergonomic headphones are designed for long-lasting comfort. Easily adjustable for the perfect fit, so you can enjoy your music without the distraction of background noises. XBS bass playback technology and 40mm drivers deliver clear, high-quality sound, with powerful extra bass, perfect for giving you the best listening experience. With up to 23 hours of playtime, you won't have to worry about interrupting your music. Quick and easy recharging is possible via the supplied micro USB cable. These over-ear headphones feature a special hinged design to allow them to fold neatly away into a pocket or bag for easy storage on the go or while travelling. The built in virtual assistant for handsfree operation allows you to ask Alexa to make a call, set a reminder or check your schedule or the weather. Headphones deliver 6.5 hours of playback on a single charge and up to 19.5 hours of playback with charging case. 15 min of Quick Charge can deliver 70 min of playback time. 15 min of Quick Charge can deliver 70 min of playback time. Size and Weight : H 21xW 20XD 31mm Weight : 7g (one side only: L and R are the same)