Lightweight Comfort Constructed with strong, ultra-lightweight materials for maximum comfort and lifelong durability. The adjustable band allows you to get the perfect fit for your head shape. It is not only suitable for your children, but also for many adults. Stereo Surround Sound Quality: Superior sound quality. Built-in latest advanced Bluetooth chip set and noise reduction technology offer you most remarkable sound quality, balanced sounds cape with ultra-low distortion for your games, music, movies and more. Charging time 1-2 hours ,talk time about 10-12 hours. Great for Running, Driving, Yoga, Gym, Working, Travel and Watching etc.