Complete mathematical calculations quickly and accurately with this black pocket calculator. The 10-digit LCD supports long decimals and large numbers, while the thin, compact design offers easy portability. A removable case adds a layer of protection against drops and impact, and the square root, percentage and sign change functions help with calculations. This Staples 10-digit pocket calculator integrates solar technology to power the device when the battery runs out. Automatic shut off. Dimensions: 0. 53"H x 2. 64"W x 4. 53"D. Pocket calculator with easy-view 10-digit flat LCD display. Product Instructions . For all basic calculations. Two-way power: solar and battery - perfect for day or night. Percent, sign change, and three memory store keys. Solve complex functions on the go with this Staples 10-digit pocket calculator.