Product Number: 41683 Collapsible design makes it ideal for laptop user Vertical in ear stereo headphone Adjustable microphone boom Light weight for comfort during use Product weight: 23 grams Cable Length: 2m Product Specification: Headphones: Frequency Range: 20-20,000Hz Impedance of speaker: 32 Ohm Max. Power Input: 30mW Sensitivity: 100dB Jack: 3.5mm Microphone: Frequency Range: 300-16,000Hz Sensitivity: -47dB +/- 3dB Jack: 3.5mm