The Kobo Sage PowerCover, an upgrade of the SleepCover, protects your eReader in a luxurious way and provides charging power on the go. Simply snap your Kobo Sage into the magnetic holder of the PowerCover, and it will be recharged by the built-in battery. The PowerCover protects your D-Touchscreen and allows your eReader to automatically turn on and off when opened and closed. If you use the Kobo Stylus with your Kobo Sage, the stylus can be conveniently stored in its own slot in the PowerCover. Note: The Kobo Stylus is not charged in the Kobo Sage PowerCover.