lights and hypersense technology and up to 20 hours by not enabling razer chroma lights and hypersense technology. auto-adjusting headband with swiveling ear cups for maximum adjustability to fit your head to perfection and fuss-free comfort, and aluminium frame ensures its lightweight and durability. cooling gel-infused cushions. reduces heat build-up during intense gaming sessions. retractable mic. the digital microphone in the ear cup can be easily pulled out as needed, and the led indicator can be used to judge whether the microphone is muted or not. chroma lighting system. the light color of the headset can be switched among multiple light modes to personalize your listening experience. wide compatibility. suitable for pc, mac, mobile devices, ps4, xbox, switch, etc. specification:  brand: razer  model: nari ultimate headphones frequency response: 20 hz?20 khz impedance: 32? at 1 khz   sensitivity (@1 khz): 107 ? 3 db input power: 30 mw (max) technology: razer hypersense thx spatial audio connectivity: wireless usb transceiver/3.5mm analog interface drivers: 50 mm, with neodymium magnets game/chat balance: yes, adjusted by knob ear cushions: designed for full-ear coverage with cooling gel, chroma lights/swiveling wireless range: 12m / 40ft wireless frequency: 2.4 ghz battery life: up to 8 hours with razer chroma lighting / 20 hours without razer chroma lighting weight: approx. 433g / 15.3oz microphone frequency response: 100hz?6.5khz signal-to-noise ratio: > 50db sensitivity (@1 khz): -42 ? 3db pick-up pattern: unidirectional package include: 1 * gaming headset 1 * usb transceiver 1 * usb cable 1 * 3.5mm port cable