Note: 1. Please allow 1?3cm error due to manual measurement. Thanks for your understanding._x000D_2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard._x000D_3. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Specification: Condition: 100% Brand New_x000D_Item Type: Call Center Headset_x000D_Material: ABS_x000D_Color: As Pictures Shown_x000D_Microphone: Omnidirectional Microphone_x000D_Frequency Response: 20-3000hz_x000D_Impedance: 1505_x000D_Sensitivity: -58dB3dB_x000D_Maximum Power: 10mw_x000D_Interface: 3.5mm Interface Features: 1The call center headset comes with noise cancelling function to keep background noise outside to create a clear communication. 2The overall design is stylish, lightweight, durable and comfortable. 3Flexible 330-degree rotatable microphone boom for optimal comfort and voice transmission. You can also take your microphone away during breaks. 4Strong performance, very stable. 5Keep your hands off the phone using this headset. You can increase productivity by working on your computer, taking notes, and handling other tasks. PackageList: 1xHeadset1x Manual