HS 555 A stereo multimedia headset suitable for video chat, multi-player gaming, music listening and speech recognition task Features 3.5mm Gold-Plated Jack Extra Pair of High Quality Cushion 2m Cord Length Clear Bass Multiplayer Internet Gaming Technical Specifications Microphone : Electret, Directional Speaker Dimension: 40mm Impedence: 32 Ohms +/- 15% Sensitivity: 105 App. 4dB SPL/0.179 V at 1kHz Frequency Response: 20 – 20kHz Cord Length: 2.5m Operational Temperature Range: – 20 – 55¡C Storage Temperature: – 30 – 70¡C