Is Arctis 9X a Bluetooth headset?

It does include Bluetooth, but this is not the wireless method used for gaming. Rather, the Arctis 9X features a dual-wireless system where its direct Xbox Wireless connection is used for gaming while Bluetooth is used to connect to mobile devices. The best part of this system is that audio from both wireless connections can be used simultaneously. So while gaming on the Xbox you can also be listening to music, chatting with friends on Discord, or taking a phone call.