Check the listing for details. 12-Digit Desktop Calculator Standard Function Dual Power Calculator Solar and AA. Condition: New. Listed at 10.99 USD. Features: This is a medium-sized calculator with 12-digit display, very useful. The buttons are large and not easy to touch. Great for simple accounting functions. It is battery powered or solar powered, dual power supply channels. Suitable for home, office, school, engineering, finance, etc Dual power supply: This calculator comes with an AA battery slot for easy access. Use this calculator in a weak environment or when there is insufficient solar energy to install an AA battery to ensure the calculator is working properly. (Note: batteries are not included and must be purchased separately) When you receive the calculator: This calculator does not contain a battery, and even the amount of solar energy stored is not enough, so when you use it for the first time, this number becomes blurred and you can even gradually see it. it `s just normal Recommendation:So, for the first time, we recommend placing the calculator in a sunny or bright place and absorbing some of the solar energy. Or install AA batteries, then everything goes well Note: If you are using a battery, please check if the + and - of the battery are not reversed. When the calculator is not working properly, please try another new battery Product size: 7.5inch x 6inch x 1.5inch Package includes: 1x Desktop CalculatorFeatures: This is a medium-sized calculator with 12-digit display, very useful. The buttons are large and not easy to touch. Great for simple accounting functions. It is battery powered or solar powered, dual power supply channels. Suitable for home, office, school, engineering, finance, etc Dual power supply: This calculator comes with an AA battery slot for easy access. Use this calculator in a weak environment or when there is insufficient solar energy to install an AA battery to ensure the calculator is working properly. (Note: batteries are not included and must be purchased separately) When you receive the calculator: This calculator does not contain a battery, and even the amount of solar energy stored is not enough, so when you use it for the first time, this number becomes blurred and you can even gradually see it. it `s just normal Recommendation:So, for the first time, we recommend placing the calculator in a sunny or bright place and absorbing some of the solar energy. Or install AA batteries, then everything goes well Note: If you are using a battery, please check if the + and - of the battery are not reversed. When the calculator is not working properly, please try another new battery Product size: 7.5inch x 6inch x 1.5inch Package includes: 1x Desktop Calculator