  This compact size of the LS-390H calculator makes it ideal for anyone with a hectic schedule. The LS-390H is portable enough to travel anywhere with you. So slim and lightweight, you almost forget it is there. Its extra-large LCD is a major advance in handheld calculators, providing easy-to-read results and error reduction.
Features:
- Ergonomically designed, large plastic keys with rounded edges for comfort
- Dual power source: solar and battery
- Wallet case included
- Extraction of square root and sign change
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