Razer Kraken Ultimate USB Surround Sound Chroma Gaming Headset – Black – THX Spatial Audio – Tuned 50mm Drivers – Active Noise Cancelling Microphone – Headphone Specs: Freq Response: 20Hz ~ 20Khz, Impedance: 32 Ohms @ 1 kHz, Connection: USB Digital – Microphone Specs: Freq Response: 100Hz – 10kHz, Unidirectional ECM Boom Pattern, Signal-to-noise ratio: >60 dB, Sensitivity (@1 kHz): -38 ± 3 dB – RZ04-03180100-R3M1 – 2 Years Limited Warranty