Main Features: Lightweight and robust: headset microphone for excellent speech intelligibility . Up to 15 compatible channels (under optimal conditions) in license-free 2.4 GHz band . Automatic frequency management . Prevents interference: Intelligent channel back-up allows co-existence with Wi-Fi & Bluetooth . Audio effects: equalizer, de-esser, automatic gain control . RF frequency range 2,400 to 2,483.5 MHz . Audio sampling 24 bit��_��_��_48 k - Hz . Signal-to-noise ratio ��_��_ 105 d - B (A) . Modulation GFSK with back channel . Transmission method TDMA, time diversity, frequency diversity, fast switching antenna diversity . Latency 3.9 ms . Audio codec APT-X Live. Operating temperature Operation: ��_��_��_ 10 ��_C to +55 ��_C . Storage temperature Storage: ��_��_��_ 20 ��_C to +70 ��_C (The temperature range is influenced by the battery characteristics) .Frequency response 20 to 20.000 Hz EM D1: . Latency multi frequency targets . RF sensitivity <-90 dBm . RF output power back channel 10 m - W��_��_��_100 m - W (country-specific) . Audio output Mic��_��_��_line level switch ��_��_��_24 dB��_��_��_0 dB, XLR, balanced max +18 dBu, Jack, unbalanced��_��_��_balanced max +12 dBu��_��_��_max +18 dBu . Low-cut filter ��_��_��_3 dB at 120 Hz . Equalizer 7-band graphic equalizer . Automatic gain control (AGC) compression��_��_��_expansion with automatic make up gain function. Display OLED . Microphone Frequency response: 50 to 20,000 Hz . Max. input level: 2.2 V RMS ��_� Line Frequency response: 20 to 20,000 Hz . Max. input level: 3.3 V RMS . Input impedance 1 M��_��__. Battery Specification 2 x AA size battery (1,5V), Operating time: typ. 6 h .