Features 1、✅ This dual-ear headset uses a USB 3-button wired version, providing convenient volume control and mute operation. With microphone rod can rotate 330° and its bendable material, allowing you to adjust the angle and position of the headset according to your personal needs. 2、✅ The anti-electromagnetic RF design effectively reduces interference and ensures clearer and more stable call quality. The retractable head-mounted steel bar design adapts to heads of different sizes to ensure wearing comfort. 3、✅ No additional settings are required, plug and play, and easy to control calls. Support computer, PC, laptop and other USB compatible devices. 4、✅ The soft PU leather earmuffs further improve the wearing comfort. And high elastic silicone ear pads, comfortable to wear. The retractable head-mounted steel bar design adapts to heads of different sizes to ensure wearing comfort. 5、✅ Whether it is a business call, online meeting or online game, this dual-ear headset is your ideal choice. Specification Model: H630D-USB Color: Black   Speaker Sensitivity: 108±3dB(1KHz at 178mV) Voice coil impedance: 150±15Ω(at 1KHz) Frequency characteristics: 200Hz-6600Hz(at 1KHz) Distortion: ≤5%(1KHz at 178 MV) Appearance size: Φ28mm   Microphone Directivity: all directions Sensitivity: 40±2dB(2.0V, 2.2KΩ, 1KHz) Distortion degree: ≤5%(4.5V, 2.2KΩ, 1KHz) Current consumption: 100~500UA Appearance size: Φ6×2.7mm Package List 1 x Headphone Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store