Product Name: Environmentally Friendly Water-Powered Clock Size: 106 x 104 x 91 mm Weight: 155g (excluding packaging) Power Supply: Water-powered Working Principle: The water-powered clock operates without the need for batteries. Simply fill the bottle on the back with water, and the clock will display the time and date clearly. The water acts as the energy source, triggering an internal chemical reaction to power the clock. This reaction involves harmless metal elements (from the top 20 of the periodic table), making it both eco-friendly and safe. The water lasts for several weeks before needing to be refilled. Instructions: To ensure proper functionality, add tap water to the container. If the display becomes dim or disappears, simply refill with water or any non-corrosive liquid. This will allow the liquid to fill the positive and negative electrodes, restoring normal operation. For a personalized touch, you can add different types of perfume to the liquid based on preference. Note: Use only non-corrosive liquids for refilling.