Operation16The unit can connect to two Bluetooth ® devices at the same time.For example, by setting up devices as below, you can connect the first Bluetooth ® device for calls and musicplayback and the second Bluetooth® for calls at the same time.For information about the connection and registration of Bluetooth ® devices and the unit (l 10,“Connecting a Bluetooth ® device”)1 Register the unit to both the first Bluetooth® device and the second Bluetooth® device.2 Connect the first Bluetooth ® device, which will be used for music playback, and the unit.3 Connect the second Bluetooth® device, which will be used for calls, and the unit.Note• For more details, including more specific setup instructions, refer to the operating instructions for the Bluetooth®devices.• Only one Bluetooth® device can be connected for music playback.• When playing back music on an iOS device, be sure to connect the unit and that Bluetooth ® device first.• When connecting a device, such as one running an Android TM OS, exclusively for calls, disable the “A2DP” setting.(Depending on the Bluetooth® device, this setting may not be available).While the unit is turned off, it can be used as normal headphones byconnecting the detachable cord (supplied).• Before connecting the detachable cord (supplied), lower the volume on theconnected device.• If you connect the detachable cord (supplied) when connected viaBluetooth ® , the Bluetooth ® connection will be lost.• The [Multiple functions button] does not work even while the unit is turned on.• Noise may occur due to dirt on the plug. Clean the plug with a soft dry cloth ifthis occurs.• Do not use any other detachable cords except the supplied one.∫ To connect to an airplane audio system1 Connect the unit and the detachable cord (supplied). (A)2 Connect the input plug (B) of the detachable cord(supplied) to the airplane adaptor (supplied) (C).3 Connect the airplane adaptor to the in-airplane audiosystem. (D)Note• The airplane adaptor may not fit the jacks in some in-airplane audio systems.This unit can be reset when all operations are rejected. To reset the unit, connect the unit to a computer usingthe USB charging cord. All the previous operations will be canceled. (The pairing device information will not bedeleted.)Making a multi-point connectionUsing the detachable cord (supplied)Resetting the unitLeft (L)side