ROYAL 115CX -- This is the cash management system your growing or mobile business needs. The ROYAL 115CX Portable Cash Register operates on four "C" size batteries (not included) for up to 12 hours of continuous use, and alternately runs on an included standard AC adapter. Automatic Tax Computation - Program up to 4 tax rates (Add-On, VAT and Canadian Tax) Locking Cash Drawer - With 4-slot bill and 4-slot coin tray Memory Protection - Battery backup provides full protection of program settings and transaction records during power outages Security System - Cash drawer and journal locks Single Display - 9-digit operator display