OSALO Scientific Calculator 252 Functions 2 line Written Display with Slide on Cover for Secondary School Students (OS 82ES 2nd Edition)

【252 Functions Scientific Calculator】With 252 functions for fractions, statistics, trigonometric, exponential, logarithmic, Variable statistics and regression etc. it covers many of the kinds of scientific functions that middle and high school students will need to use in their courses. Reading instruction attached will help you know how to use and find these functions 【Brightness Adjustment Function】The screen brightness can be adjusted by simple operation to get the best display effect, dimming to relieve eye fatigue, brightening to get clearer display results, to improve the calculation efficiency. 【Written Display Scientific Calculator】Input expressions and arithmetic operations same as written form in the textbook, which is easier to read than traditional calculators. The 2 line display shows both input and calculation results, convenient for students to check the calculation process and results. 【Dual Power Source Electronic Calculator】Solar and battery, double safe uninterruptible power, environmental protection and energy saving advantages. 【Ultra-light & Portable】Weight: 4.93oz. (141g); Size: 164 x 80 x 20(mm)/6.46 x 3.15 x 0.79(inch); Material: ABS plastic. With slide-on hard case, convenient to carry it outside and hold it in one hand.