Press the power button located on the bottom of the Right Ear cup. If this is your first time using the headphones, it should immediately start looking for a device to connect to. Make sure that the device that you are trying to connect to is in pairing mode. The JBL JR300BT should display on your discoverable devices within 2-5 seconds. If the headphones have not successfully connected to the device, press and hold the Bluetooth button located next to the Power button on the Right Ear Cup for 2 seconds. As the headphones go into pairing mode, they should connect to your device within 2-5 seconds.