Casio fx-991ex classwiz scientific calculators suitable for shs and tertiary students. has 552 functions and non programmable. can perform graph and spreadsheet. our products are sourced straight from factory in thailand which makes the wholesale price comparatively cheaper than the market price. a small box contains 10 pieces of calculators. same day delivery service is made to all regions in ghana upon the customers request. we welcome all people who are into the calculator market. come lets do business and you will enjoy working with us.