7 segment LED displays manufactured in the 1970s often had magnifying lenses are built into the epoxy package; these are commonly referred to as "bubble displays" and were popular in watches and calculators produced by Litronix, Hewlett Packard and National Semiconductor. This project showcases various 7 segment multiplexed clocks built using Arduino UNO, prototype shields, DS-3231 RTC modules and are equipped with push buttons adjust the date and time.