Sennheiser M3AEBTXL Instruction Manual page 6

External microphones for active noise cancellation ANC
Voice assistance button;
pressing and holding for 5 seconds activates the Bluetooth
pairing mode
Input for USB-C;
for charging and music playback/data connection
Input for analog audio cable;
when a cable is connected, flight mode is activated/Blue-
tooth is deactivated
Ear cups (steplessly adjustable) with internal microphones
for active noise cancellation ANC
Sheepskin ear pads
Ear cup joint with on/off function for the headphones
Microphones for phone calls
Overview of the LED indications
LED
lights up green
for approx.
2 seconds
lights up blue for
approx.
2 seconds
lights up red for
approx.
2 seconds
flashes red-blue
for approx.
5 minutes
flashes green
flashes red
quickly
flashes red
3 times
pulses red
pulses yellow
Meaning; the headphones...
... switch on
... are connected to a device via
Bluetooth
... are not connected to a device via
Bluetooth or the connection has been
lost
... are in Bluetooth pairing mode
... indicate an incoming call
... have a very low battery level
... switch off
... are being charged (charge level is
very low)
... are being charged
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