I am a clock
I work hard to be on time
Early not late
My gears work together to be exact
My hands tell you what to do and where to go
My alarm goes off when you are late
When I go down, I am easy to fix
I will always be there when you need the time
I have a crystal to keep my parts inside
I am quiet when I want
But when the hour comes I am not
I am small but important
Without me, no one will know the time
I am a clock
