It is a strong field. But it falls fast, specially if the magnetized object is tiny:
https://en.wikipedia.org/wiki/Neodymium_magnet 2013/7/26 Jones Beene <jone...@pacbell.net> > That kind of field at 20 cm from the device (their claim) would be > pulling tools from across the room. > > ** ** > > Jones**** > -- Daniel Rocha - RJ danieldi...@gmail.com