ASUS Audio Cover The World's First Attached 5.1-Channel Surround Sound Accessory Immersive 5.1-channel surround sound With four satellite speakers, one center-channel speaker, and one subwoofer, ASUS Audio Cover provides outstanding surround sound while watching videos or listening to music. Long battery life To keep the entertainment going, ASUS Audio Cover delivers up to 6 hours of continuous use on a single charge. UP TO 6 hrs Battery life UP TO 6 hrs Batter life ASUS AudioWizard for lively surround sound ASUS AudioWizard is smart software that complements Audio Cover's six speakers to deliver the ultimate surround sound experience on ASUS ZenPad 7.0. AudioWizard lets you optimize the surround sound effect by adjusting settings, such as the expansiveness of the sound and the distance between you and ASUS ZenPad 7.0. MovieMode MusicMode SmartMode GamingMode SpeechMode Fashionable design ASUS Audio Cover is designed with a fine leather pattern that perfectly matches ASUS ZenPad 7.0, and is available in black and white colors.