Hi,guys and gals.
  I find most of my performances are outdoors.
  I need some sort of wireless system for two performers with headsets,& battery to work outside.
 Any suggestions?
  Thanks!

Whatever you buy, just remember you get what you pay for. I thought I was getting a deal on a very low budget headset. It turned out to be a disaster when showtime arrived.

Plan on spending some money for a top of the line headset. Especially being outside, the wind can kill a head mic in a heartbeat.

Also remember head comfort. A bad fitting headset can cause a nasty headache.

Fender has a 15 amp batery opperated speaker amp the the size of a paint can called the Amp Can.  As to the head set ... like sonny said, you get what you pay for.  Plan on spending around $200 per head set.

Fender has a 15 amp battery operated speaker amp the the size of a paint can called the Amp Can.

I got an Amp Can a few months ago and have used it about 6 times. I love it! Great power, without distortion. It has some tone adjustment as well.