Calculator

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Check and correct 112 Steps, Big Display

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Cell Battery

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Uses cell battery power, hyper solar power

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Large Display. Battery Powered

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Dot Matrix Display. Solar + Battery. Textbook Display

Features:

Dot Matrix Display. Solar + Battery. Textbook Display

Features:

Extra Large Display. Two-way power (Solar + Battery).

Features:

Extra Large Display. Two-way power (Solar + Battery).