Hamilton Watch American Classic PSR 74 H52304130. Reimagined for today and as cool as ever, the PSR returns in the same unmistakable style of the first digital watch that changed the world. Inspired by the original, vintage shape of the Cushion Pulsar model, first introduced in 1974, it remains emblematic of the space age-era. Featuring a brand-new quartz module, the PSR 74 sports the same hybrid display technology, combining reflective LCD (Liquid Crystal Display) and emissive OLED (Organic Light Emitting Diodes). The newly added second pusher adds a convenient date function, with red numerals display.