Eight-digit calculator features a compact, pocket-size design that can be stored virtually anywhere for business professionals on-the-go. Large LCD provides a crisp, clear display to help prevent reading errors. Durable keys are appropriately spaced for fast, accurate data entry. Twin-power operation runs on solar energy with a battery backup to deliver consistent, reliable performance in any environment. Pocket calculator also includes automatic tax keys, percent key, three-key independent memory, extra-large plus key, automatic power down & more.