I have one that resets automatically when the battery is changed. Trouble is the software has a 24 hour brain while the face reads twelve so sometimes when you pop the new battery back in the hands spin for up to 23 hours worth of movement and your new battery becomes virtually drained.
My oven clock runs slow, my coffee machine clock runs fast, I have to make an average out of the two and it's still different from the real time
I want a radio waves set digital wall clock, does a nice one exist?