Answer:
One simple click, one simple flash. A piece of memory, for years I'll last. What am I?
I am the minerals vital for your good health.
I say everything I hear to others around. Iām not an animal nor part of the human race. I will immediately repeat after you; But only if my tail is in place.
Travel a mile and I will change, travel a million and I will end as I started. What am I?
There is one in every corner and two in every room.
I am rarely touched but often held. If you are smart you'll use me well. What am I?