The back and sliding cover are yellow. This is School Surplus that came packed bulk, so there is no factory packing. The calculator will show "School Property". These are obtained legally through state surplus. This is everything you need for you or your student. This calculator comes with: Sliding Cover Battery Door Battery Compartment Cover Lithium Backup Battery CD Manual (actual CD received may vary) USB to Mini-USB Cable Mini-A to Mini-B USB Cable (4) Duracell (or Energizer) AAA Batteries.