I bought this
cheap pen on eBay for $20. It was
very simple, press and hold record,
talk, release to stop. It also
had a play button and a delete
button. That was it. It was very
small. It used 3 watch batteries
which cost more than the $20 I
paid for the unit. The unit only
had 30 seconds of record time.
I used this unit until the batteries
died then paid $25 for a new set
of batteries and it lasted about
a week before it stopped playing
back reliably. It worked sometimes
but eventually the speaker stopped
working at all. At least I can
still use it as a pen. There appear
to be higher quality units on ebay
now and from other places but the
unit I have is only used as a pen
today.
Look for a
better model, something with a
brand name.