Razer Opus X (Green) CLOSED WIRELESS CIRCUM-AURAL HEADSET - BLUETOOTH 5.0 - STEREO SOUND - ACTIVE NOISE CANCELLATION - MICROPHONE - CONTROLS ON THE HEADSET - 30H BATTERY LIFE Incredible immersion Enhance your audio experience with the Razer Opus X and its active noise cancellation technology. This closed wireless model features Bluetooth 5.0 technology for uncompromising use. And with up to 30 hours of battery life, there's no need to worry about running out of battery.