This Durabrand 828 Graphing Scientific Calculator is a reliable tool for students and professionals alike. With its silver color and vintage design, it is sure to stand out in any collection. This calculator is perfect for solving algebra, chemistry, and trigonometry problems, as well as for statistical analysis. The Durabrand brand is known for producing high-quality calculators, and this model is no exception. It is easy to use and will meet all your mathematical needs. Whether you are a collector or a student, this calculator is a great addition to your collection.