The waterpebble is now featured on BuzzFeed Life -  26 Ingenious Products That Will Vastly Improve Your Shower 

It will help reduce your time in the shower by sensing the water flow around it. It flashes green for when you should start showering, yellow for when you’re halfway through, and red for when you should stop (after four to five minutes). Save water, save the planet — or at least enough hot water for everyone in your family to use.