8 digit calculator is perfect for school, home, or office. The AddPad? features a modern black and silver design that gives it a stylish appearance. Multi-colored keys are flush with faceplate, similar to a tablet PC. Size is similar to an iPad?: 9-1/2" tall by 7-1/2" wide by 1/2" deep. Other functions include: 4 key independent memory, plus and minus key, square root key, and percent key. Battery powered. 2 year manufacturer's standard warranty.