1. Function: USB business headset has functions of call, support speaker volume adjustment, microphone mute, volume one key mute. USB plug, plug and play, no need to drive, easy to use. 2. Good Design: Corded single ear headset is designed with sturdy construction and materials to ensure super performance and make it durable. And the long headphone cable provides flexibility of movement. 3. With Noise Cancelling Microphone: Single sided ear headphone has a built in noise cancelling microphone that can be twisted at will. It provides clear dialogue even in noisy environments. 4. Ultra Lightweight Design: USB monaural headset has soft ear pads and a flexible headband that won't put any burden on your ears, and gives you all day wearing comfort for your chat. 5. Wide Range of Applications: Traffic headset is suitable for devices with USB interface, ideal for users who handle a large number of calls, such as call center agents, telecom sales, etc. Spec: Item Type: USB Business Headset Material: ABS Model: H390-USB-2 Colour: Black Type: Monaural Plug: USB Interface Function: Call, Support Speaker Volume Adjustment, Microphone Mute, Volume One Key Mute Applicable Scope: Compatible with devices with USB interface Speaker Parameters: Sensitivity: 105±3dB (at 178mV 1KHz) Voice Coil Impedance: 150±15O (at 1KHZ) Frequency: 100Hz-10KHz Distortion: =5% (at 178mV 1KHZ) Microphone Parameters: Directivity: Unidirectional Sensitivity: -40±2dB (2.0V, 2.2KO, 1KHz) Distortion: =5% (at 4.5V 2.2KO 1KHZ) Frequency: 200Hz-6KHz Current Consumption: 100-500?A How to Use: Plug and play Package List: 1 xUSB Business Headset See more

Wide Range of Applications: Traffic headset is suitable for devices with USB interface, ideal for users who handle a large number of calls, such as call center agents, telecom sales, etc. Good Design: Corded single ear headset is designed with sturdy construction and materials to ensure super performance and make it durable. And the long headphone cable provides flexibility of movement. With Noise Cancelling Microphone: Single sided ear headphone has a built in noise cancelling microphone that can be twisted at will. It provides clear dialogue even in noisy environments. Ultra Lightweight Design: USB monaural headset has soft ear pads and a flexible headband that won't put any burden on your ears, and gives you all day wearing comfort for your chat. Function: USB business headset has functions of call, support speaker volume adjustment, microphone mute, volume one key mute. USB plug, plug and play, no need to drive, easy to use.