H2O Desktop Calculator
Water Powered Desktop Calculator
This is a water powered 12 digit calculator from Tango. It require No batteries and No Electricity. Just add a small amount of tap water to the replaceable water battery to make it work.
- Water Powered Desk Top Calculator
- For Professional or Home Use
- 12 digit Display
- Replaceable H2O battery with 2 year life
- Size (H) 170mm (W) 104mm (D) 25mm
- Weight 110 grams
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