Audio-Technica ATW-3211N/831 3000 Network Lavalier System 100025976 It is powered by a

It is powered by a single 15VDC 400 mA supply (included)

you can easily read

Frequency response [- 3dB]: 67 - 19

or a cleaner vocal sound

Lit indicator displays when power is present

Audio-Technica ATW-3211N/831 3000 Network Lavalier System 100025976 It is powered by aAudio Technica ATW 3211N 831 3000 Lavalier System 470 530 (With Microphone) 3000 Series network enabled systems offer the same features and configurations as the standard systems along with network monitoring and control via Audio Technicas Wireless Manager software. Each network enabled receiver also comes with an AT8631 joining plate. ATW R3210N network enabled receiver and ATW T3201 body pack transmitter with AT831cH cardioid condenser lavalier