H20 Water Powered Calculator
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H20 Water Powered Calculator Overview
The water powered calculator does not require batteries or recharging, just add water. Unscrew the tube at the top and fill with tap water with the squeeze bulb provided, wait a few minutes and the calculator will become useable. One fill operates the calculator for at least one month. Provides a full range of basic functions.
H20 Water Powered Calculator Feature
- Water powered!
- No batteries.
- No electricity.
- Innovative and unique.
