I don't know how to pair (register) the headphones with a Bluetooth device and connect them.

g procedure]
1. With the power turned off, press and hold the multifunction button on the headphones until the
LED blinks.
*When connecting a device for the first time: Approx. 3 seconds
*When it is not the first time: Approx. 5 seconds
2. The headphones begin searching for the Bluetooth device to connect to, and the LED blinks red and white alternately. Turn on the Bluetooth device and select the device name “HDJ-X5BT” from the Bluetooth menu on the Bluetooth device.
When the white LED lights, the pairing is complete.
*For the instructions of the Bluetooth device, please refer to the instruction manual of the device.

[Canceling procedure]
Following the instructions of the Bluetooth device, please cancel the registration of the headphones paired with the device at the Bluetooth setting on the device.
*For the instructions of the Bluetooth device, please refer to the instruction manual of the device.