comfortable & durable the headband can be adjusted to fit the head, balancing the wearing pressure, comfortable to wear, light, flexible, b and durable, suitable for professional game players. crystal clear communication the flexible and bendable microphone utilizes a cardioid pattern that records sound from an area that focuses on your mouth. this helps to capture your voice with clarity while suppressing background noise from the back and sides.  40mm driver unit featuring custom-tuned 40mm drivers, the headset produces clear and balanced sound from thundering explosions in all-out wars to subtle footsteps in stealthy covert operations. cross-platform compatibility compatible with pc, mac, xbox one*, ps4, nintendo switch and mobile devices with a 3.5mm audio jack. specification: brand: razer model: kraken x-mercury headphone frequency response: 12hz?28khz impedance: 32?@(1 khz) sensitivity(at 1khz): 109db drivers: 40mm, with neodymium magnets connection type: 3.5mm cable length: 1.3m approx. weight: 230g/8.1oz microphone frequency response: 100hz?10khz signal-to-noise ratio: >60db sensitivity(at 1khz): -45?3db pick-up pattern: unidirectional ecm/cardioid pickup packing list: 1 * headset 1 * user manual