Canon Premium F717SGA Scientific Calculator - 242 Functions - Textbook Display, Environmentally Friendly, Dual Power, Battery Backup, Auto Power Off, Low Battery Indicator, Antibacterial Keypad, Hard Shell Cover, Lightweight, Easy-to-read Display - 4 Line(s) - Dot Matrix - Battery/Solar Powered - Battery Included - CR2032 - 168 mm Height x 80 mm Width x 14.5 mm Depth - Black