The Royal 100CX portable cash register operates on four "C" Batteries for up to 12 hours of continuous use or with the included adapter for AC Power. Compact Design (Money Draw sold separately Item # MCD100). This is idea for the small business, vendor carts, craft shows, flea markets, farm stands, and more. 4 departments: For sales analysis by category of merchandise; includes preset department pricing for quick one-key sales entry. Ink Roll Printer: Provides either journal or receipt printout. Uses 2 1/4" bond paper. Automatic Tax Computation programs up to 4 tax rates (Add-On, VAT and Canadian Tax). Memory Protection: Battery Backup provides full protection of program settings and transaction records during power outage. Single Display: 9 Digit operator display. Carrying Handle: Built into the gift box for safe transportation.