Feature:1. [2.5mm Plug]‑ For devices with 2.5mm headphone plug. With speaker volume adjustment and microphone mute function.2. [Long Lasting Comfort]‑The soft ear cushions and flexible headband will not cause any burden to your ears.3. [With Microphone]‑Flexible arm ensures that your mic stays in the perfect position. HD mic makes the noise smaller and the sound clearer.4. [Flexible In Use]‑The single ear headset uses sturdy structure and material, and the long earphone cord provides the flexibility of moving around.5. [Easy To Use]‑Plug and play, ideal for call center, conference calls, telemarketing, business, office and home.How to Use:Plug and playSpecification:Item Type: 2.5mm Business HeadsetMaterial: ABSModel: H360-2.5MVColour: BlackType: Monaural Plug: 2.5mm PlugFunction: Call, Speaker Volume Adjustment, Microphone MuteScope of Application: For devices with 2.5mm headphone plugSpeaker Parameters:Sensitivity: 105±3dB (at 178mV 1kHz)Voice Coil Impedance: 150±15Ω (at 1kHz)Frequency Characteristic: 100Hz-10 kHzDistortion: ≤5% (at 178mV at 1kHz)Microphone Parameters:Directivity: Single DirectivitySensitivity: -40±2dB (2.0V, 2.2KΩ, 1kHz)Distortion: ≤5% (at 4.5V 2.2KΩ 1kHz)Frequency Characteristic: 200Hz-6 kHzCurrent Consumption: 100-500υA Package List:1 x2.5mm Business Headset