Water Powered Desktop Calculator

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Water Powered Desktop Calculator
Item# 81284

Availability: In stock


Save Money On Batteries & Electricity!

This breakthrough, full-function calculator practically runs for free! Just add a few drops of water to the removable, waterpowered battery. The water creates a safe chemical reaction in the battery, which produces an electrical current that powers the calculator for up to 3 months. Compact 4 7⁄8" x 5 1⁄2" size.