Balance your books accurately with this Staples 10-digit display desktop calculator. Make calculating financial transactions easy with this 10-digit display desktop calculator. The auto power-off function preserves battery life when not in use, while the 10-digit display provides convenient viewing. Multiple functions, including square root, help you solve basic math problems. This Staples 10-digit display desktop calculator uses both solar and battery power for reliability, and the angled display offers an optimal viewing angle.