Adafruit PCF8523 Real Time Clock Breakout Board - STEMMA QT / Qwiic
Brand: Adafruit
This is a great battery-backed real time clock (RTC) that allows your microcontroller project to keep track of time even if it is reprogrammed, or if the power is lost. Perfect for data-logging, clock-building, time stamping, timers, and alarms, etc. Equipped with PCF8523 RTC - it can run from 3.3V or 5V power & logic!
$9.50 AUD, inc GST