RISARYA TINY RTC I2C MODULE,CLOCK CHIP DS1307,24C32 TIME COUNTER AND CLOCK Timer Counter and Clock Electronic Hobby Kit

This tiny RTC module is based on the clock chip DS1307 which supports the I2C protocol. It uses a Lithium cell battery (CR1225). The clock/calendar provides seconds, minutes, hours, day, date,month, and year information. ... The clock operates in either the 24-hour or 12-hour format with AM/PM indicator.