Did not start right up so I tried several batteries. Finally it worked and the first battery worked just fine. So keep trying until you get it just right. Movement seems very light, but so far it keeps time and has been weeks. Looks good and though small it can be read from several feet away. If you do not like a ticking sound it will drive you crazy in a quiet room. Huge ticking sound for such a small movement. Aesthetically works in my very small bathroom.