Logitech Slim Folio for iPad Air (3rd Generation) holder Output (USBA): DC 5V=3A 4 quiet Output (USBA): DC 5V=3A 4 restore true colors 2 4 year battery life Slim Folio uses 2 replaceable coin cell batteries to power your keyboard Featuring a smart power management system use Slim Folio for up to 4 years without needing to replace the batteries (Based on 2 hours daily use) Holder for Logitech Crayon and Apple Pencil (1st gen) Sketch write then store your Logitech Crayon or Apple Pencil (1st gen) where it won’t get lost or in the way The convenient holder will keep it firmly in place until you’re ready to use it again