The headset also provides high ambient-noise reduction and produces high-quality audio using an electret uidirectional microphone. The headset features a flexible ambidextrous design, soft foam padding, foldable ear cup, replaceable ear, head, and temple cushions and is wired with a dual 3.5mm connector for use with MicroCom Systems. Features For use with all MicroCom beltpacks Detachable 5 ft. (1.52 m) cable with 3.5mm dual connector Outstanding audio quality with enhanced acoustic isolation Closed back circumaural (over ear) design available in single and dual-ear models Flexible, ambidextrous swiveling mic boom SmartBoom flip up microphone mute Electret noise-cancelling cardioid microphone optimized for voice communications Comfort fit adjustable headband Replaceable ear cushion pad, headband pad, and windscreen Non-reflective rubberized matte black finish Collapsible earpiece design Specifications Microphone Microphone Type: Electret Condenser Frequency Response: 20–16,000 Hz Mic Sensitivity: -45 ± 2 dBV/Pa at 1 kHz Pattern: Unidirectional Output Impedance: 1–1.9 kO Bias Voltage: 1.5V~2.2V Speaker (Headphone) Frequency Response: 20–20,000 Hz Nominal Impedance: 100 O Sensitivity at 1 kHz: Single 117 dB SPL/mW Dual 121 dB SPL/mW Speaker Type: Dynamic Max Input Power: 500 mW Cables Termination at Ear: Removable Length: 5.00 ft. (1.52 m) Outside Diameter: 0.24 in. (6.00 mm) Physical Features Mic Boom Length: 8.50 in. (215.90 mm) Weight (without cable): Single 8.1 oz (229.63 g) Dual 11.4 oz (323.18 g) Cable 3.8 oz (107.73 g) Connector Options PHS-SB110E/SB210E-DMG Dual Mini (3.5 mm TRRS)