1、ENC NOISE CANCELING: ENC noise canceling business headset with HD microphone that can be twisted at will for less noise, providing clear conversations in noisy environments. 2、ULTRA LIGHTWEIGHT: Single ear business headset with soft ear cushions and flexible headband won't put any burden on your ears. Ultra lightweight design for long time wearing comfort. 3、WIRE CONTROL: USB headphone, plug and play, no driver required, easy to use. Suitable for devices with USB interface, support speaker volume adjustment, mute, microphone mute. 4、RUGGED AND DURABLE: Wired PC headphone with rugged construction and materials designed to ensure superb performance and make it durable. Long headphone cord provides flexibility for mobility. 5、MULTIPLE APPLICATION: This USB single ear headset has a wide range of applications and is ideal for home, offices, call centers, telemarketing, customer service, teleconferencing, etc. 1 x USB Business Headset Item Type: USB Business HeadsetMaterial: ABSModel: H2000 USB ENCColor: BlackType: Single EarPlug: USB PlugFunction: Call, Speaker Volume Adjustment, Mute, Microphone MuteScope of Application: Used for Devices with USB InterfaceSpeaker Parameters:Sensitivity: 105±3dB (at 178mV 1kHz)Voice Coil Impedance: 150±15Ω (at 1kHz)Frequency Characteristics: 100Hz-10kHzDistortion: ≤5% (at 178mV 1kHz)Microphone Parameters:Directivity: Single PointSensitivity: -40±2dB ( 2.0V, 2.2KΩ, 1kHz)Distortion: ≤5% (at 4.5V 2.2KΩ 1kHz)Frequency Characteristics: 200Hz-6kHzCurrent Consumption: 100-500µA