Oriental Culture Series "Han Wind" Tourbillon BG953502 by Beijing Watch Factory, Limited Edition 65 Pieces

The dial is made of natural shellfish that produces magic colors if viewed from different angles. Embedded below 12 o'clock is a Tiananmen logo made of pure platinum. Above 6 o'clock on the edge of the tourbillon window is written "Pt 999." A big square in the middle is in contrast with the round dial. This "railway" square makes this watch unique, helps easy time-reading, and expresses the ancient Chinese opinion that "the sky is round, the earth is square."