HP Poly Blackwire 3310 Monaural MS USB C Headset meeting room audio visual PU (with 3mm foam) Armrests ER707 M2 PU (with 3mm foam) Armrests 4D arms with PU padding Gas Lift Class 4 60mm Base 350mm aluminium Foam Density 50kg m3 Backrest Adjustment 90° – 135° Maximum Weight Capacity <150 Kg Product Dimensions (W x H x D) 74 1 x VGA PoE+ Ports 8 x 10 100 Mbps PoE+ (802 USB A (via adapter) Speaker Size 32 mm Speaker Impedance 32 ohm Speaker Bandwidth 20 Hz to 20 kHz Sound Pressure Level 94 dB SPL Microphone Type Noise Cancelling Boom Microphone Frequency Response 100 Hz to 10 kHz Boom Rotation 280° Hearing Protection SoundGuard Digital Inline Controls Call Answer End it allows users to maintain situational awareness while handling high clarity voice calls throughout extended work shifts