Multi-functional Calculator: The 12-Bit Solar Calculator is designed for a variety of applications, from business and office calculations to finance and accounting tasks. It's an essential tool for professionals and students alike. Eco-Friendly Solar Power: Equipped with a reliable solar panel, this calculator ensures you never run out of power in well-lit environments, making it perfect for on-the-go use without the need for batteries. Convenient Writing Board: Featuring an integrated writing board, this calculator allows for quick note-taking and reminders right at your fingertips, enhancing productivity and organization. User-Friendly Design: Designed with ease of use in mind, it features a large display and responsive buttons for quick data entry and calculations. Color: Black Material: plastic Package Contents: 1 x Solar Calculator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.