Description: Adopting VHF-H frequency band for obviating interference frequency. Two microphone options, tie clip microphone or headset microphone, equipped with high-intensity back clip. Offers high quality sound transmission and clear voice at operating range up to 50M line of sight without feedback or distortion. A wide range of device support applications, as long as the device with a microphone interface can be connected. Plug and play, powered by 2pcs AA batteries(excluding), select mic and plug it into the microphone socket of the transmitter, and turn on. Perfect for live performances like preaching in church, weddings, presentations, school plays, trainings, public speeches, interviews or video and audio recording. Specification: Frequency offset: ±11kHz Frequency response: 80Hz-15kHz Frequency stability: ±0.005% Signal to noise ratio: >60dB Distortion: 0.5% (1kHz) Number of channels: two channels Sensitivity: -70dB M Use distance: 50 meters in the open area Receiver power supply: DC 12V/320mA Transmitter power supply: 2 * AA battery (Excluding) Transmit power: 20mW Frequency range: 200MHz-270MHz Material: ABS Plastic Size: 103x65x22mm/4.05x2.55x0.86inch Package Includes: 2 Piece Transmitter 1 Piece Receiver 1 Piece Microphone(Headworn or Tie Clip for Option) 1 Piece Adapter Connector 1 Piece USB Cable 1 Piece User Manual Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement.