A used item in excellent condition HCL Headphone Headset with Microphone Mic - Strong and Sturdy - Ideal and suitable for Educational use in Schools, Colleges, the Workplace, Office and by Gamers, PC, Internet, Languages, Call Centre and Laptop - black HCL Headphones With Microphone Headset Type:Headset Supplied With Audio Cable Quantity Of 1 Headphone specfications Impedance: 32 ohms ±15% Sensitivity: 100dB ±3dB Frequency response: 20 - 20,000Hz Microphone specfications Impedance: 2.2K Sensitivity: -58dB ±2dB Frequency response: 30-16,000Hz Cable length: 2M.approx 3.5mm Jack plugs Delivered within 3 days if purchased before 1 pm