Features: 100% brand new and high quality MIC positioning is accurate, structural design, durable and comfortable to wear. Hearing protection technology, care for the users hearing. Adjustable headband, sound shock protection circuit. Suitable for call centers. Excellent sound quality, light weight, durable. Compatible uses: telemarketing, telephone consulting services, insurance, hospitals, banks, telecom operators, enterprises, etc. Package Includes: 1x Telephone Headset Specifications: Material: PVC+PU+ABS Weight: 65g Size: Length 18cm/7.09inch Width 15cm/5.90inch Height 5cm/1.97inch Interface Type: USB Diameter: 30mm/1.18inch Impedance: 32 Frequency: 20-20KHz Impedance: 32 Sensitivity: 115db Microphone Directivity: Omnidirectional Length: 2m/78.74inch Colour: Black note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.