Specification: Item Type: USB Business Headset Material: ABS Model: H2000 USB ENC Color: Black Type: Single Ear Plug: USB Plug Function: Call, Speaker Volume Adjustment, Mute, Microphone Mute Scope of Application: Used for Devices with USB Interface Speaker Parameters: Sensitivity: 1053dB (at 178mV 1kHz) Voice Coil Impedance: 15015 (at 1kHz) Frequency Characteristics: 100Hz-10kHz Distortion: 5% (at 178mV 1kHz) Microphone Parameters: Directivity: Single Point Sensitivity: -402dB (2.0V, 2.2K, 1kHz) Distortion: 5% (at 4.5V 2.2K 1kHz) Frequency Characteristics: 200Hz-6kHz Current Consumption: 100-500A Package List:1 x USB Business Headset About this item 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. 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. 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. 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. 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. 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. 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. 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. 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. 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.