@DarkOverord like this one here
https://www.digikey.com/en/products/detail/cymbet-corporation/CBC92132C-Q3-TR3/10264892?s=N4IgjCBcpg7ArAFiqAxlAZgQwDYGcBTAGhAHsoBtEeANgGZFY6QBdEgBwBcoQBlTgE4BLAHYBzEAF9pQA
requires 50 nA of current to keep time, using a common 32.768 kHz crystal, and costs less than $2
-F
@Felthry I mean part of my surprise is like in my follow up toot, my 3DSes have repeatedly lost the time and date haha