If the clock becomes unresponsive or fails to sync, a factory restart may be necessary:
The CH-899 uses WWVB (60 kHz) in North America. In Europe, it uses DCF77 (77.5 kHz). The model is region-specific. ch-899 chouchin radio controlled clock instructions
Once the battery is in, the hands will usually spin quickly to the 12:00 position and stop. This is normal! The clock is now "listening" for the radio signal. It can take anywhere from 3 minutes to a few hours (sometimes overnight) to catch the signal and jump to the correct time. 2. How to Set it Manually If the clock becomes unresponsive or fails to
: Keep the clock at least 2 meters away from TV sets, computers, or air conditioners that may cause signal interference. ch-899 chouchin radio controlled clock instructions