The Shure BLX188/W85 Wireless Dual Presenter System combines professional-quality sound with simple setup and and up to 14 hours battery life for great audio performance for two presenters right out of the box. The system includes BLX88 tabletop dual-channel receiver, 2 WL185 lavalier microphones with BLX1 bodypack transmitters, lavalier clips, power supply, 2 sets of AA batteries, windscreens and user guide.