Tooth clock rethinks how to use water sustainably first thing in the morning. Its use is simple: when you want to brush your teeth, first pour water in the capsule part of Tooth clock and put it into glass selfstanding part. Then, water will start dropping – just like a sand clock – and you can start cleaning your teeth. When all water is released into the glass it means 3 minutes are over, so you can take the water and rinse your teeth with it. The main idea behind Tooth clock is not only to minimize water consumption at a basic daily task, but also to revitalize thought process about it and retain the main function of taking care of one’s health.