2-line HD display: The calculator uses a 2-line, 12-bit widescreen HD display, which can display multiple digits and support two lines of input at the same time. The formula can be displayed upstream and the results can be displayed downstream, improving work efficiency and reducing errors. (Note: our bulk calculators uses 2 Lr1130 batteries not solar energyPractical ToolsThis engineering calculator has an impressive content of 240 scientific functions and handles univariate and bivariate statistical calculations with ease. Whether you need percentages, trigonometry, 24-level parentheses, summation, regression, fractions, permutations, combinations, or any other calculation, this calculator has it all. Its scientific/engineering notation mode further enhances its usefulness, making it a versatile and necessary toolMemory function: This functional engineering calculator can read historical calculation records, reducing double calculation and improving work efficiency.allowing you to effortlessly view and recall yourprevious work and resultsAbundant Quantity: You will receive 12 packs color science calculator (each contains 2 Lr1130 Batteries), Three each of pink, green, blue and greysuitable for business offices, homes, schools, banks and other occasions, can meet the needs of high school and advanced level courses, easily handle 1 and 2 variable statistical calculations to meet the computing needs of users in the fields of math, science and engineerscientific calculators bulk is perfect for assisting with basic budgeting, personal financial management, and general calculation tasks, ensuring you have all the bulk balculators for you needSlide protection: Scientific calculators come with a slide design. When the calculator is not needed to work, the slide can prevent the calculator from being touched by mistake. When using the calculator, the lid can be placed behind the calculator to provide a comfortable grip, and the handle is firmer and less likely to fall off. It is a applications for work and study, perfect for offices business, engineering calculations, accounting calculations, student and home use