Blender
Just installed it a couple of days ago, so only used it in the R44 so far. Based on current experience I expect good performance in other ships. Don't know (yet) firsthand how long the battery will last. Material from Headsets Inc. suggests about 20hrs. They also recommend better name batteries i.e. Duracell etc. and to avoid nicads for reasons already mentioned. I also carry a spare in my pocket. The racket inside my lid with the ANR off is now rather unpleasant!
Cheers,