It depends on the type of condition. When working, for example, pain in a specific area, it is more effective to place the device as close as possible. For a more general application, hang it around the solar plexus area.

The more the better. It is designed as a light weight portable device that can be worn all day. The longer you use it, the more effective it is, but its effect can be noticed from the first hour.

Make sure the device does not get wet or moist. It could be damaged.

Nothing. The closer you get to the recommended frequency, the more effective it will be for what is indicated.

Yes, it is possible and recommended.

If we want to treat something general, such as for example energetic recovery, place the device on the solar plexus, hanging it from the neck, to work at a systemic level.

If, on the other hand, you want it to act on a specific area, place it on that specific area for best results; such as on the ovaries zone for menstrual pain, or over the hip in a hip osteoarthritis in order to mitigate the pain.