Headsets
 

Looking at finally getting a set. Been eyeing up the smart-com headset and like the fuel timer feature. Anyone have experience with these and if these will allow multiple headsets to connect with a current set? Say for instance there's 2 drivers and 1 pitman, will all three work together? We have a shortage of pitmen during our mains and this would be helpful.
sorry if this has been asked elsewhere but did a search and came up empty..also not much videos on YouTube.....
Any input is much appreciated