Hamilton H52414131 American Classic PSR Digital Quartz 41mm x 35mmThe story of innovation synonymous with the debut of the world's first digital watch in 1970 continues with a new model of our iconic Hamilton PSR Digital Quartz. Featuring a hybrid LCD and OLED digital display, its green digit-dot numerals can be read at a glance during the day and with the push of a button at night.WAKING A SLEEPING GIANTThe original digital wristwatch is back. The Hamilton Pulsar was one of the emblematic creations of the space-age era.AWAKEN TECHNOLOGYWith the Hamilton PSR, we're proud to bring back the unmistakable style of the digital watch that changed the world.STAINLESS STEEL CASEA highly resistant alloy composed of steel and chromium. It can be worked to resemble a precious metal. It is nearly impervious to rust, tarnish, and corrosion.QUARTZ MOVEMENTQuartz mechanisms are known for their accuracy, with only a one-minute variation annually. The battery sends an electric current to the crystal to keep time accuratelySAPPHIRE CRYSTALSynthetic sapphire crystal is a tough scratch-resistant material, only diamonds could leave a mark.WATER RESISTANCEYour timepiece is resistant up to 10 bar (100m) / 145 psi (328 ft).