Connecting with the 'Sony | Headphones Connect' app.How to make a wireless connection to Bluetooth devices.System requirements for battery charge using USB.Setting the headset in the carrying case.What you can do with the Bluetooth function.The headset can be paired with multiple devices, but can only play music from one paired device at a time.In this case, delete the pairing information for the headset from the device and then pair them again. When the headset is initialized All of the pairing information is deleted.When the pairing information for the headset has been deleted from the Bluetooth device.If a new device is paired after 8 devices are already paired, the registration information of the paired device with the oldest connection date is overwritten with the information for the new device. When a 9th device is paired The headset can be paired with up to 8 devices.Pairing information has been deleted after repair, etc.Once Bluetooth devices are paired, there is no need to pair them again, except in the following cases:.In this case, start the operation over from step 1. If pairing is not established within 5 minutes, pairing mode is canceled, and the headset turns off.If both or are displayed touch, or touch if is displayed.