Perfect for conference rooms, board rooms, or even larger applications, Panasonic's WX-ST700 DECT wireless boundary mic features a unidirectional electret condenser microphone to provide superior dialog clarity and speech intelligibility in a wide area with little interference. The WX-ST700 also features two modes of operation - Always On or Push-to-Talk (PTT), easily selectable via dip switches in the battery compartment. This wireless boundary mic transmits over 1.9GHZ to any Panasonic 1.9 GHZ Digital Wireless Microphone Receiver (WX-SR202 / 202DN, WX-SR204 / 204DN, WX-SE200 / 200DN, sold separately). A recessed capacitive touch control is located on the top of the wireless boundary mic which functions as a mute button (when the mic is set to Always On mode) or a Talk button (when the mic is set to PTT mode). Additional controls include a hard on/off switch on the side of the boundary mic. LED indicators for power, status, talk, mic input level and charging provide easy status information without distraction during the meeting. The WX-ST700 also features a 3.5mm audio input connector (for transmitting audio from a PC or smartphone instead of the microphone). The WX-ST700 takes 2 x AA Alkaline batteries or 2 x AA NiMH batteries (which can be charged via the USB-C connection on the unit or Panasonic's WX-SZ600 4-port networked charger).