The H20 Desk Calculator incorporates the patented new replaceable water battery. This is the coolest adaptation to a calculator since the invention of the micro-chip!

Just top up the battery with regular water and the calculator will spring to life. And with a full range of standard calculator features it makes a great gift for the home, office, or school.

To maintain a constant supply of energy simply refill as needed, typically every 2-3 months. The H20 water battery is eco-friendly and all components of the calculator are recyclable.