Features: Plug-and-play- USB connectivity to Yealink IP phones, includingT41S/T42S/T46S/T48S/T42U/T43U/T46U/T48U/T53/T53W/T54W/T57W/T58A/ VP59 (T41S/T42S/T46S/T48S should be upgraded to version 82 or later) HD Voice/Wideband speaker performance 35 mm speaker Noise-canceling microphones and passive noise cancellation ActiveProtection technology safeguards users from acoustic injury Music control Integrated LED indicator and warning tone 300° bendable boom arm for easy adjustment without breaking Specifications: Headset cable length: 1.2 m Supported operating systems: Microsoft Windows, Apple Mac OS Color: Black Weight: UH37 Mono: 96.5 g / UH37 Dual: 139.5 g Operating temperature: -10°C to 50°C Microphone: Microphone quantity: 2 Microphone frequency response range: 100 Hz-10kHz Microphone type: ECM Microphone bandwidth: Wideband Microphone sensitivity: -44.0 dB re. 1 V/Pa Speaker: Speaker size: 35mm Speaker sensitivity: 109 dB SPL @ 1 kHz, 179 mV Speaker frequency response range: 20 Hz-20 kHz Speaker impedance: 32 /-4.8Ω, @ 1.0 kHz Speaker input power: Normal 10 mW, Max. 30 mW Speaker bandwidth: Wideband
