This headphones with microphone headset is ideal for video conferencing! With comfortable padded earphones you'll be able to wear these headphones for hours! Have a net meeting or just chat on IM in comfort! Order today! Features/Specifications: Professional Headphones with Headset Microphone General Features: Black color Padded headphones Speaker: 40 mm dynamic type Impedance: 32 ohms Sensitivity: 96 db± 4 db Frequency: 20 - 20000 Hz Max. Input power: 100 mW Volume control dial Cord length: 5.91 feet (1.8M) approximate Headset Microphone: Condenser Type Headset Microphone Omni-Directional polar pattern Sensitivity: -40 dB ± 3 dB Frequency: 50 - 1600 Hz