Shure BLX1288/CVL Dual-Channel Wireless Combo Lavalier & Handheld Microphone System (J11: 596 to 616 MHz)Key Features For Two Presenters or Lecturers CVL Cardioid Lav Mic Lightweight Bodypack Transmitter PG58 Cardioid Mic Transmitter Dual Channel Tabletop Receiver 123 Auto Scan Frequencies Internal Antenna Diversity 14 Hr AA Batteries Expandable to 12 Mic Channels 300' Range The Shure BLX1288 CVL is a cost effective wireless lavalier and handheld combo microphone system for two presenters, speakers, teachers, or lecturers which offers quality sound,