Product overview

PXC 550-II

	Headband
	Ear cup joint with on/off function for the headphones
	Ear cups, steplessly adjustable
	Microphones for active noise cancellation ANC: 2x directed outward, 2x directed inward (not visible)
	Touch pad (right ear cup)
	Bluetooth on/off switch position: off “0”, on “I”
	Ear pads
	Speech microphones (3x) for phone calls
	Active noise cancellation (ANC) switch position: off “0”, USER mode “I”, MAX mode “II”
	Voice assistant button pressing for 4 seconds activates the Bluetooth pairing mode
	LED
	Input for USB micro-B; for charging and music playback/data connection
	Input for analog audio cable; when a cable is connected, flight mode is activated/Bluetooth is deactivated

Overview of the LED display

During operation

LED		Meaning; the headphones...
	flashes white 3x	... switch on
	flashes white 3x	... are connected to a device via Bluetooth
	flashes red 3x	... switch off
	flashes red 3x	... are not connected to a device via Bluetooth or the connection has been lost
	flashes white sequentially	... are in Bluetooth pairing mode
	flashes red	A charging error/battery error has occurred (> Information on the built-in rechargeable battery)

During phone calls

LED

Meaning

flashes white 3x

Incoming call

flashes red 3x

Incoming call and the rechargeable battery of

the headphones is almost empty

During charging

LED		Meaning
	1 red	Rechargeable battery is almost empty (less than 2% charged)
	1 white	Battery is approx. 2-20% charged
	2 white	Battery is approx. 20-40% charged
	3 white	Battery is approx. 40-60% charged
	4 white	Battery is approx. 60-80% charged
	5 white	Battery is more than 80% charged

If the LED display does not light up immediately during charging, clean the charging contacts and charge the headphones until the LED display lights up again (> Charging the headphones' rechargeable battery).

Notes on voice prompts

The headphones output voice prompts for various functions (see examples below). Using the Smart Control app, you can change the language of the voice prompts, choose between voice prompts and beep sounds, or deactivate the status messages with a few exceptions (e.g. rechargeable battery is empty).

Voice prompt	Meaning/headphones
“Power on”	switched on
“Power off”	switched off
“Device (1) (2) connected”	are connected to device 1 or 2
“No connection”	not connected via Bluetooth
“Pairing”	are in Bluetooth pairing mode
“Pairing successful”	Bluetooth pairing successful
“No device found”	cannot connect to a paired device
“Volume min”	volume set to minimum
“Volume max”	volume set to maximum
“Call rejected”	incoming call rejected
“Call ended”	call ended
“Mute on”	Microphone is muted, active call is put on hold
“Mute off”	Microphone is reactivated
“More than xx % battery left”	Rechargeable battery has the stated charge level
“Recharge headset”	Rechargeable battery is empty. Recharge the headphones.

Overview of the buttons and switches

ANC switch

Position	Function	See
	ANC is deactivated	> Information on active noise cancellation ANC
	ANC is activated USER mode (can be adjusted via the Smart Control app)
	ANC is activated MAX mode

Bluetooth on/off switch

Position	Function	See
	Bluetooth is activated	> Deactivating Bluetooth/activating the flight mode
	Bluetooth is deactivated	> Deactivating Bluetooth/activating the flight mode

Voice assistant button

Press the button	Function	See
	Activates/deactivates the voice assistant	> Using the voice assistant/voice dialing
	Activates the Bluetooth pairing mode	> Pairing the headphones with a Bluetooth device