Save money on batteries!   This clock is powered by water!   The epitome of a greener gadget. With sustainable design and practical function in mind, this Eco-Friendly clock is actually powered by the water that occupies 70% of the earth’s surface! Without the need for batteries, the Eco-Friendly clock keeps perfect time as electrodes harvest energy from the water. All you have to do to make the clock  run is fill its tank up with tap water.    You need to change the water in the tank every so often and add water when it evaporates.  The clock has a memory function that  remembers the time as you change the water.  Save on the cost of buying batteries!  This clock includes an Alarm.   Measuring approximately 4” high and 3.5” wide, this playful yet eco-conscious timepiece is truly what’s next in going green. Do your part and participate in the fight against global warming today!