Features: Noise Canceling Microphone: Built-in noise-canceling rotatable microphone can block out unwanted background noise for precise voice picks-up, ideal for clear conversation. Wide Compatibility: USB plug and play, no external power or drive needed. Compatible with desktop computers, laptops and other USB audio devices. Retractable design: The headphone card can be ly retractable to achieve a comfortable arc suitable for you. In-line Control: With in-line control, you can easily control volume up and down, mute mic and mute speaker. Protect ears: prevent high-pitched output/momentary high-pitched sounds and sounds with peaks greater than 118DB, protect your hearing. Specifications: Plug type: USB Frequency response range: 20-20K (Hz) Impedance: 32 (Ω) Sensitivity: 100 (dB) Wire length: 1.8 (m) Speaker diameter: 40 (Φmm) Earplugs/earmuff material: PVC Headphone cable material: TPU Purpose: General purpose, ordinary earphones, noise reduction earphones, voice earphones, computer earphones, music earphones, HIFI earphones, game audio and video earphones, gaming earphones. Package List: 1 x USB Headset with Microphone