The Bedol Water Clock

This water-powered clock appeared on the EDN website. Rather than get the story second-hand, I went to the Bedol website. According to the manufacturer: The handsome Bedol Water Clock works 100% on natural power. No batteries, no chemicals, no electricity – no pollution. You don't even need to wind it up! Just fill the tank with natural tap water and you're set for 12 to 14 weeks of accurate timekeeping before refreshing. (You won't even lose time while changing water, thanks to the built-in memory chip!) With its bold modern styling, space-age accuracy, and surprisingly low price, the Bedol Eco-Friendly Water Powered Clock is ideal for home or office – or as a unique gift item. Not bad for $25, and no batteries required. There is a video that explains the process.

Posted  November 2012