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including the renowned German quality mark GS (Geprüfte Sicherheit awarded by Intertek)
It does not require batteries and operates only in direct sunlight
The LEDs in the shower head turn on automatically as soon as you turn on the shower tap and water begins to flow through the shower head
Smart Display – How to Read Information
All LEDs will turn off
H2O Power Water Calculator 12 Digits Ecological solar toys including the renowned German qualityCalculate 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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