The Jabra Evolve2 55 Stereo Headset has Active Noise Cancellation (AHC) and a frequency range of 20 Hz to 20 kHz for quality sound. The headset is compatible with Jabra Direct, Jabra Sound+, and Jabra Xpress and features Bluetooth wireless technology. In fact, you can pair up to 8 Bluetooth devices. The Evolve2 55 has a wireless operating range of 100

Technical Info:
*Active Noise Cancellation 
*Speaker size- 28mm    
*Speaker max input power -30 mW  
*Speaker frequency range-20Hz - 20000Hz 
*Speaker bandwidth (music mode)-20Hz - 20000Hz
*Speaker bandwidth (speak mode)-150Hz - 6800Hz 
*Microphone type- 2 Analog MEMS / 2 Digital MEMS (Stereo) | 1 Analog MEMS / 2 Digital MEMS (Mono)
*Microphone sensitivity- -38 dBv/Pa (analog microphone)/-26 dBFS/Pa (digital microphone)  *Microphone frequency range- Analog 20Hz - 10000Hz | Digital 100Hz - 6300Hz        *Certifications and compliance- Alcatel-Lucent, Avaya, Cisco, Unify, MFi, Zoom, Google Meet, Amazon Chime, Google Fast Pair, Microsoft Teams (variant dependent)