Series: Blackwire 8225 Color: Black Audio System Type: Headset Brand: Poly Headphones Type: On-ear (binaural) Connectivity Technology: Wired Headphones / Form Factor: On-Ear Sound Output Mode: Binaural Response Bandwidth (Headphone): 20 - 20000 Hz Sensitivity: 84 dB +/-3 Impedance: 32 ohms Model: Blackwire 8225 Microphone Operation Mode: Omni-directional Response Bandwidth (Microphone): 100 - 10000 Hz Active Noise Canceling: Y Interfaces: USB Type-C Cable Length: 219 cm Compatibility: Compatible with PCs and desk phones with available USB Type-A port Weight: 185 g Service & Support Type: Poly standard two-year limited warranty Features: Noise and echo reduction; Dynamic EQ optimized