Priced at 210 Euros, Nokia’s recently launched 7500 Prism model is certainly the most affordable device from the company’s fashion line of handsets. And now, we have the first Prism commercial for the Chinese market. There’s nothing too spectacular about it — as expected the strange and unusual keypads are the key differentiating factor of this device. Wherever the girl from the video goes, the triangles appear around her. Looks neat, although boring…