Sennheiser CX 150BT SEBT2 Instruction Manual page 6

Product overview
6 | CX 150BT
Overview of the LED indications of the
headphones
LED
lights up red
lights up blue
flashes blue
flashes red-blue
approx. 1 min
flashes blue
flashes red
flashes blue
pulses red
approx. 3 sec
flashes red
flashes red
If the LED does not light up immediately during charging, clean
the charging socket and charge the headphones until the LED
lights up again (>
Notes on voice prompts
The headphones output voice prompts for the following functions.
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
"Power on"
"Power off"
"Device (1) (2) connected"
"Lost connection"
"Pairing"
Meaning; the headphones
are being charged
are fully charged
are switched on
are in Bluetooth pairing mode
Bluetooth pairing successful
Bluetooth pairing failed
are connected to a device via Blue-
tooth
are not connected to a device via
Bluetooth or the connection has
been lost
rechargeable battery is almost
empty
are switched off
9).
Meaning/headphones
are switched on
are switched off
are connected to device 1 or 2
are not connected via Bluetooth
are in Bluetooth pairing mode