This is a quartz movement clock powered by (2) D-cell batteries so all the mechanical gears that are turning are just for visuals only. They don't actually do anything to help keep time for the clock itself.
I recently picked this up from Amazon, but it's available on other sites as well under different names.
Sea Team Mechanical Style Gear Elements Wall Clock
https://amzn.to/2vIXGUL
http://amzn.to/1NvCPda
Kikkerland Big Wheel Hour Wall Clock, Black (no date)
http://amzn.to/1NvDdIu
2AA to D cell adapter
http://bit.ly/bg2aatodsize
