Using noise reduction technology, it provides clear communication and pure sound quality. The calling headset features an ergonomic design, plug and play functionality for convenience and high efficiency. Made of ABS and metal materials. Product length is 160cm. With strong compatibility, suitable for all USB audio interface devices. High-quality headphones deliver clear sound performance. Item Name: Earphone Material: ABS, Metal Style A: Single Ear USB Type Style B: Separate USB Non-luminous Type Style C: Single Ear 3.5mm Type Frequency Response Range: 20-20000Hz Features: Noise Reduction, Plug and Play, Comfortable Wearing Size Details: Length: 160cm / 62.99" (Approx.) Notes: Due to differences in lighting and screen settings, the item's color may vary slightly from the images. Please allow slight dimensional variations due to manual measurement. Package Includes: 1 x Earphone