Hamilton American Classic PSR Digital Quartz H52414130 100M Men's Watch Fifty years after the introduction of the Hamilton Pulsar with the bright red LED display, the Hamilton PSR Digital celebrates its launch. It has a hybrid display housed within a stainless steel case. It is a limited edition watch duplicating not only the look of the original Pulsar but also its pushbutton illumination system, giving it the WOW factor and a sense of retro-futuristic.