As you all know, the time of day is a mathematical translation of the earth's movements versus the sun - and the moon is our companion at night.

Our friends at Barcelona's The Emotion Lab (the Australian Tom Allen, the Mexican Christian Vivanco and the Spanish Yago Rodríguez) have taken these facts in and created Moonwatch: a watch that shows you exactly which phase the moon is in.

The watch also has a second, normal clock interface. The ability to switch between these two interfaces invites people to gain a closer understanding of their mood and daily life on earth.

Moonwatch is currently still just a concept, but the designers are actively looking for a manufacturer - so if you're interested, let them know!