It is not made up of the hard plastic and wont make the big
sound when failing onto the floor.It is the high-tech product,
and it is not phonate with the extrusion.It works without the
batteries because there is the magnetic field and magnetic ball
in it.When the dog rolls the ball,then magnetic ball incise
the magnetic line to generate electricity to make the invoice.
Different speed and direction can make the invoice different,and rapid speed could make the big invoice.But the slow speed and some direction may not make the invoice.Therefore,the dog will find it is very funny.And you could also fill some socks in the ball,not too big, or the dog may not get it;not too small, or the dog could easy to get.It could let the dog more cute and wise.
Price: USD2.29
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