Features 1、[Easy To Use]‑Plug and play, no need to drive, speaker volume plus or minus, microphone mute, meet all your daily needs. 2、[HD Microphone]‑The HD microphone that can be twisted arbitrarily and provides a clear conversation even in a noisy environment. 3、[Comfort Wearing]‑Soft ear cushions and flexible headband provide an ultra light wearing experience. 4、[Great Design]‑The long cord for the flexibility of movement. The sturdy structure and ABS material for super performance. 5、[Wide Use]‑Compatible with devices with RJ9 headphone plug. Can be used for home office, call center, telemarketing, customer service, etc. Specification Item Type: RJ9 Office Headset Material: ABS Model: H360D-RJ9MV Colour: Black Type: Binaural Plug: RJ9 Function: Call, Speaker Volume Plus or Minus, Microphone Mute Scope of Application: Compatible with devices with RJ9 headphone plug Speaker Parameters: Sensitivity: 105±3dB (at 178mV 1kHz) Voice Coil Impedance: 150±15Ω (at 1kHz) Frequency Characteristic: 100Hz-10 kHz Distortion: ≤5% (at 178mV at 1kHz) Microphone Parameters: Directivity: Single Point Sensitivity: -40±2dB (2.0V, 2.2KΩ, 1kHz) Distortion: ≤5% (at 4.5V 2.2KΩ 1kHz) Frequency Characteristic: 200Hz-6 kHz Current Consumption: 100-500υA Package List 1 x RJ9 Office Headset