their new system is what we have. It does have the option to connect via bluetooth but won't reach the tower. It came with 4 battery/mic packs and the new plugs they use are just aux chords. So you can actually hook your dr. beat or phone up to one of the packs and use that.
I believe that there is no bluetooth that stretches far enough to reach your tower from back field. Could be wrong but that's what I found when I was researching.
Being in control of the met during rehearsal is very nice. took a while for me to get used to it but I love it now.