Hewlett Packard HP 49G Blue Graphing Calculator 

• Programmable
• Built in Computer Algebra System
• 3 User Guides:
•     The HP49G Pocket Guide (never opened)
•     HP 49G Advanced User's Guide
•     HP 49G Graphing Calculator User's Guide
• Hard slide-on cover for screen protection
• Takes 3 x AAA batteries (not included)
• Size: 7 inches
• Excellent condition!