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11 €
[Ref. 8512]
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The H2O 8 digit water powered calculator uses the latest long life H2O technology to power this compact 8-digit calculator.
Simply add water to the cell to activate, and enjoy free energy to run your calculator. Add water when required, typically every 3 to 6 months. At the end of the life of the cell – usually 2 to 3 years, the cell can be replaced, and you can start over again.
The calculator is made from biodegradable plastic, so is environmentally friendly and easily recycled.
Dimensions : 11 x 6.5 cm
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