“O” Clock, Marking Transparent Time (eau = water in French) Based on the concept of "the shape of water. A clock that marks transparent time," the "O" series uses transparent materials, a specialty of Mr. Yoshioka (mentioned below), to create a design that, like water, has no "shape" and, like light, possesses the brilliance of the moment. This lightweight bangle-type watch weighs a mere 25g and can be worn like an accessory. The watch is not currently running due to a dead battery, but it will work once the battery is replaced. The instruction manual is included.