Made from premium material, it is reliable and durable.Two-way power: solar and 1x AA battery (Not Include).Solar power, energy saving and environment friendly.With the shape modern design, practical to use.Ultra thin, portable and useful. Compact, light weight and easy to carry.Touch design, very convenient to use.Automatically shutdown when you don't use it.Suitable for both personal and professional use.Specification:Material: ABSSize: 14x11.8x2.5CMPackage Includes:1 x CalculatorNote:Transition: 1cm=10mm=0.39inchPlease allow slightly 0-1cm difference due to manual measurement.Colors can appear different depending on light and how the listing is viewed.Thanks for your understanding and attention. Wish you a pleasant shopping experience