Time Cube Clock with rotating triangles

Here is cool new clock in the shape of a cube; it starts as a box, but then splits into triangles. The biggest triangle shows hours, middle one shows minutes and the smallest one at top shows seconds.

At first sight this clock does look like some medieval period clock, but it is not. This is just a cool new design by the China.
It seems hard to tell the time, but if you think about the triangles like normal clock hands it may not be as difficult as it seems. This clock costs just $12.