This product is either discontinued or we cannot get that from suppliers.
Kingston HX-HS5CX-SR, Frequency Response 15Hz–25,000 Hz, Impedance 41 Ω, Sound pressure level 95dBSPL/mW at 1kHz, Connection Headset - 3.5mm plug (4 pole), Electret condenser microphone, Noise-cancelling, Frequency response 50Hz-18,000 Hz, Sensitivity -39dBV (0dB=1V/Pa,1kHz).
HyperX CloudX™ Gaming Headset has been tested and approved by Microsoft and delivers signature HyperX comfort, durability, and amazing sound for serious Xbox gamers. CloudX has convenient in-line audio controls that sidestep system.