A model indicates that the new X720 digital camera is almost the same thickness as a 1 jiao (Chinese currency) coin. BenQ recently announced that, in conjunction with the Japanese optical instrument producer Pentax, it had developed the 7 million pixel, X720 digital camera, the thinnest and lightest camera in existence. At it it's thinnest the camera is just 1.25 centimeters thick. It will retail for 2680 yuan.