I have been using the iSolo wireless sax mic for several months now. I can quickly move easily between the tenor, alto, and soprano because they all have the little velcro clip on the bells. The velcro diminishes mechanical noise. I have used it in all types of venues indoor and outdoors. Great little lightweight mic for live gigs. I charge it up using the usb cable before gigs and it has lasted through 4 hour gigs. I do turn it off if I take breaks. I like it.
I have been using the i