"It"?

I've heard of people who simply
stop a watch from keeping accurate
time by putting it on their wrist.

Don't know if that's true or not,

but that's what "they" say.

I used to have a special knack
for tearing up vaccuums
and had to buy a new one
each year.  Now "it's"
something else.

Here's a riddle for you -
Mister says that he buys
me one each year.
I must admit that is an accurate
staement given the last few years.

I now need another "one".
It has nothing to do with me.
I.Am.Innocent.

Take a guess - what do you
think "it" is?
(I'll let you know the answer
in tomorrow's post.)