ships from HongKong.This solar powered desk calculator help you whiz through tricky math problems and display their answers on bright, easy-to-read screens. With all the basic functions of a standard calculator, you are certain to get a lot of use out of this fashionable desk accessory. The overall calculator measures 18.3 long*10.7wide*1.5high cm. Dual power source(solar energy and button battery)without battery The overall calculator measures 18.3 long*10.7wide*1.5high cm Features a large 12-digit display with tilting screen touch type conductive adhesive, comfort sensitive buttons Simple design, perfect for school, home and office use