Features: Simple and easy to use, with LED display. A wide range of applications that support devices, as long as you can connect a device with a microphone interface. Applicable to teaching, business promotion, conference training. Automatic connection, wide application, compatibility with sound, amplifier, multimedia, mobile sound. The transmitter is equipped with a rear clip for easy carrying. Specification: Frequency Offset: 11 kHz Transmission bandwidth: 50Hz-18kHz Frequency stability: 0,005% Signal-to-noise ratio: >90dB Distortion: 0,5% (1kHz) Number of channels: two channels Sensitivity: -70dB M Use distance: 50-100 meters in open space Receiver power supply: DC 12V/320mA Transmitter power supply: 2 * AA battery (excluding) Broadcasting power: 20mW Frequency Range: 200MHz-300MHz Output mode: independent and hybrid automatic selection Transmitter size: approx. 105*65*22mm/4.1*2.5*0.8inch Receiver size: approx. 104*45*20mm/4.1*1.8*0.8inch Package weight: approx. 458 gr Transmitter: Transmitter battery: 2 * AA (excluding) Frequency stability: 0,005% Carrier output power: 30mW Suppression of undesirable emissions: >40dB Method of modulation: vhf Maximum modulation: 75 kHz Receipt mode: (capacitive) (LWM-6188/C) Recipient: Reception sensitivity: < 2μV Image attenuation: >40dB Audio Output Impedance: 600 Ω Audio output level: 0-0,5 V Use power: AC 220-240 V 50/60 Hz Power consumption: 1W List of packages: 2 transmitters 1 x receiver 2 microphones 1 x adapter connector 1 USB cable 1 x manual in English Note: