This Texas Instruments TI-84 Plus Silver Edition graphing calculator is a reliable tool for any business or office setting. Its 64X86 display size and battery power source make it easy to use and transport. This model has been tested and is confirmed to be in working order, so you can trust it to perform any necessary calculations. It is perfect for use in various industries, including finance, engineering, and education. The brand, Texas Instruments, is well-known for producing high-quality calculators that can handle even the most complex equations. Purchase this TI-84 Plus Silver Edition and add a useful tool to your office equipment collection. Very Nice