Shure BLX188/CVL Dual-Channel Wireless Cardioid Lavalier Microphone System (H10: 542 to 572 MHz) For Two Presenters or Lecturers, 2 x CVL Cardioid Lav Mics, 2 x Lightweight Bodypack Transmitters, Dual-Channel Tabletop Receiver, 123 Auto-Scan...