Casio JW-120MS Calculator: Durable plastic buttons give a soft feeling; Profit margin percentage calculation function; Automatically calculates value added tax (TAX+, TAX-); Decimal adjustable button (Cut, 5/4, ADD Mode); Divides every 3 digits with a comma. Features: Special large 12 digits LCD display screen; Adjustable display screen for better view angle; Independent memory unit (M+, M-); Calculates business percentages such as Cost, Sell, Margin; Profit margin percentage calculation function; Easy algebra calculation function; Automatically calculates value added tax (TAX+, TAX-); Material: Plastic buttons with metallic protection cover; Adjustable Display Screen: Available; Calculation Functions: GT/MR/MU/M-/M+/AC/C; Power Source: Solar energy and LR44 batteries. Size of case / Total weight: Dimensions (D x W x H): 178.5x107x26.1mm; Weight: 170g