I did not change the settings of my watch when I received it since the date, time, and summer time were already set correctly but after 2 weeks of use I woke up with a different time with our wall clock, quite shocking experience I thought I was late. The battery is not low though, I was wondering if it has to do with the radio signal.
I bought the watch in December 23. Since January 24, I've been struggling with keeping it to the correct time. Right now it's running about 3 minutes slow or 24 hours ahead, depending on the date. And it doesn't connect to the atomic clock at all. I've tried indoor, outdoor, in the car, on a hill, nothing helps. Big disappointment for me.
Watch never connected to Atomic Clock in EST zone. Impossible to set and wasted 2 hours with Citizen Tech Support before finally throwing in the towel and giving up!