Dirt or Debris: Dirt or debris can get inside your watch and cause the gears to stop moving properly. If this is the case, you may need to have your watch cleaned and serviced by a professional watch repair person. If your Dango watch's second hand stops intermittently, there are a few things that could be causing the issue. Here are some possible reasons and solutions:

Wind the watch: If the battery is not dead, you may need to wind the watch to get it started. Most Breitling watches have a self-winding mechanism, but if it has not been worn for a long time, it may need to be manually wound. Loose Second Hand: If the second hand on your watch is loose, it could cause it to stop intermittently. A loose second hand can be caused by a damaged pinion or cannon pinion. You may need to take your watch to a professional watch repair person to have it fixed. Magnetic Interference: Magnetic fields can interfere with the movement of the gears inside a watch, causing it to stop or run erratically. If you have been around strong magnets or electronic devices, it could be causing the issue. Try moving your watch away from these devices to see if that helps.