Power: Solar power or 1 AA battery r nUnit type: Basic calculator with 12-digit LCD r nSize: 5.71*4.72 inches r nWeight: about 5.15 oz/146 g r nMaterial: Plastic + electronic components r nAbout this item: r n r nSilent calculator with 12-digit LCD is a portable standard functional business desktop calculator made of high-quality ABS material + electronic components, with the characteristics of portable, environmentally friendly, multi-functional, easy to use, energy-saving and beautiful, which can help you make accurate calculations r n r nThe perfect choice for your office and home. You can not only use it yourself, but you can also give it as a timeless gift to your friends and family. I believe they will give you good feedback and you will not regret choosing it. r n r nSilent calculator with 12-digit LCD: Eye-angled, upright display, easy to read r n r nTwo strong power modes: Dual power supply with solar power or 1 AA battery, extends service time r n r n r nPackage includes: r n1 * Calculator