The 991EX 552 Functions is a comprehensive scientific calculator designed for high school college graduate students and researchers. Its rechargeable solar power feature harnesses energy from the sun, providing a reliable source of electricity to charge its internal battery.

This versatile device features a 6-line display with multiple functions, including arithmetic operations, trigonometry, logarithms, and statistical analysis. The calculator also includes an eraseable LCD writing tablet, making it ideal for note-taking and data entry.

The solar power feature allows you to recharge your device using natural light, eliminating the need for batteries or electricity. The 991EX 552 Functions is equipped with high-precision calculations and accurate results, ensuring reliable and precise measurements.

Whether you're studying physics, chemistry, or biology, this calculator provides a comprehensive platform for exploring complex concepts. Its rechargeable solar power feature makes it an eco-friendly option for those who value sustainability. With its durable design and easy-to-use interface, the 991EX 552 Functions is perfect for anyone looking to upgrade their math toolkit.