Nady WLT 15 Lavalier or Headset Microphone Transmitter, Ch A1

FEATURES:
• Audio Input-3.5 mm mono locking jack for connecting to omni or unidirectional lavalier mic or unidirectional head worn mic, with phantom power.
• Controls-OFF/STANDBY/ON switch, input level adjust
• LED Indicators-Unit "ON" (single flash), Low Battery Alert (steady)
• RF Power Out-50 mW (maximum allowed by FCC)
• Harmonic and Spurious Emissions- > -40 dB
• Battery-9V alkaline
• Battery Life-Up to 15 hours