At the beginning of the clock was much quieter, with time makes the movement seem louder with occasional pops noticeable even if the numbers just do not jump around.
When hours transition there for a few seconds a bizarre sequence of intermediate transitions. During the transition from 2:59 to 3:00 clock results in 2:59 -> 3:59 -> 3:00 - this is a little confusing if you do not yet know.
In summary, a nice retro gadget that but probably not last as long due to the design-related special features (see above).
