①. The protective case is hard and can prevent damage to the calculator. It is sturdy and professional grade scientific calculator. ②. 12 digits widescreen display, 2-line display, displaying both time input and calculation results. ③. Professional level scientific calculator with 240 scientific functions. Easily handle statistical calculations for variables 1 and 2, as well as three angle modes (degrees, radians and divisions) and scientific/engineering symbol modes. ④. Battery powered, reliable to use. The sliding protective shell has a hard protective that prevents scratches, collisions and dust. ⑤. Suitable for high school students, college students, and professionals. Only calculator, excluding other accessory demonstrations. ⑥. Specifications: Item: 240 Functions Students Calculator ⑦. Size: approx 16x8cm/6.3x3.54in ⑧. Color: White/ Green/ Pink/ Blue ⑨. Weight: 130g ⑩. Material: ABS ⑪. Digits: 12 digits ⑫. Battery: Need 2AAA Batteries（Not Included） ⑬. Package Includes: 1 x Calculator ⑭. Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. ⑮. Please allow 0-1cm error due to the manual measurement.