Thai Scientific Calculator Black - Casio FX-991ES Pluse
Thai Scientific Calculator from Casio Model FX-991ES Pluse, Black Color Made of High Quality Plastic, Requires A1 Battery and Can Work with Solar Energy, Screen Size 4 Inch, Suitable for Students and Professionals, Can Perform 417 Functions, Can Display Mathematical Expressions as They Appear in School Books Which Helps Students Study, Can Perform Regular Mathematical Operations, Statistical Operations and Trigonometric Functions.