About this item LARGE DISPLAY: Crystal-clear 12-digit LCD screen with 30-degree tilt angle reduces glare and enhances visibility, making it perfect for extended use DUAL POWER SOURCE: Reliable solar power with battery backup ensures uninterrupted operation in any lighting condition ERGONOMIC DESIGN: Large, well-spaced buttons with soft-touch technology provide silent, comfortable, and accurate input experience STABILITY FEATURES: Four non-slip rubber feet keep the calculator firmly anchored to your work surface for stable operation PRACTICAL FUNCTIONALITY: Essential mathematical operations, memory functions, and convenient dual-zero key streamline calculations for office and home use