If you need handsfree, short range wireless communication then
perhaps this belt clip unit with a headset will work for you.
This unit is full duplex, which means that you can carry on a
conversation just like on a telephone where both sides can speak at
once. Which seems kind of silly if you think about it, but it's great if
you want to argue with someone. The best part of full duplex is you
don't have to hold down a button to talk. This radio achieves full
duplex by sending and receiving on two different frequencies.
The 2.4GHz frequencies used do not require an FCC license so no
complex licensing procedure is required.
The range is up to 450 feet line of sight, but that will be reduced
with obstructions in the way.
Included in this kit is two radios and a very light headset that
weighs in at only 1/2 of an ounce. The headset has spring wire frame
that provides a comfortable unisex fit. This kit works well for users
who have to wear their headsets for long periods such as people in
restaurants, health care, or retail stores.