... pollution, no battery,green power 3.ECO power clock 4.new electronic gadget 5.CE,ROHS water ... engineering come together to create the amazing water clock.1.Without batteries, electricity or any other power ... !) into the tubes on the back of the clock. It can show the time, month and date ... fuels to generate electricity which drives the clock.water powered clock with pen holder Model:VK-WC201Item dimensions ...