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Ships within 48 hours · Estimated delivery Jul 26 - Jul 31
Series: Connected
ecological and educational bicycle decoration that lights up and moves thanks to the invisible power of nature
7A in full sunlight)
Some energy is lost and the system has to run longer to reach and maintain the desired temperature
H2O Power Calculator 12 digits straw Series: ConnectedCalculate conveniently and in harmony with nature! The H2O desktop calculator is a revolutionary device that requires only clean water to work! Forget about purchasing and disposing of batteries or lighting restrictions for solar calculators. Designed by Tango Group, this 12 digit calculator uses patented H2O water activated battery technology. This is a breakthrough, ecological solution for an everyday product at home and in the office, offering
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