Description: Unique Design: wireless lavalier microphone system, with LCD digital display screen, AA battery powered, real time battery power and frequency at a glance. Features adjustable volume control button and convenient ON/OFF switch, easy to operate. Clear Sound Quality: High performance UHF wireless lavalier microphone, high signal over noise ratio, clear sound, distortion free, has a long transmission range up to 50m/164ft. Easy to Use: The microphone system has a plug in audio adapter receiver for voice amplifying, it can directly connect to an amplifier, speakers, stereos, audio processors, computers, TVs, etc., plug and play. Compact and Portable: UHF wireless lavalier microphone system, easy to clip on the lapels, free the hands. Small and compact size, lightweight, easy to carry. Wide Application: Professional UHF wireless lavalier lapel microphone, suitable for presentations, speeches, performances, conferences, training, interviews, audio recording, etc. Specification: Product size: 18cmx7cm/7.09inchx2.76inch Material: Plastic Signal-to-noise ratio: >60dB Distortion: 0.5% (1kHz) Sensitivity: -70dBM Use distance: 50 meters Receiver power supply: DC 12V/320mA Transmission power: 20mW Frequency range: 560MHz-590MHz Transmitter: Frequency stability: ±0.005% Carrier output power: ≤30mW Suppression of stray : >40dB Modulation method: uhf Maximum modulation: ±75KHz Pickup mode: (capacitive) (LWM-6188/C) Receiver: Receiving sensitivity: 40dB Audio output impedance: 600 Audio output level: 0-0.5V Power supply: AC220-240V 50/60Hz Power Consumption: 1W Package Includes: 1 Receiver 1 Transmitter 1 Microphone 4 AA Battery Note: Please allow slightly errors due to manual measurement and different monitors.