Sennheiser SPORT True Wireless Instruction Manual page 15

1. Open the charging case by overcoming a slight magnetic resis-
tance and insert the left earbud into the left charging compart-
ment and the right earbud into the right charging compartment.
The earbuds are magnetically pulled into the charging compart-
ments.
2. Open the protective cover of the USB socket of the charging box.
Connect the USB-C connector of the USB cable to the USB-C
socket of the charging case.
3. Connect the USB-A connector to a corresponding socket of a USB
power source (to be ordered separately). Make sure that the USB
power source is connected to the power supply system.
The rechargeable batteries of the earbuds and the charging case
are being charged.
If no earbuds are inserted into the charging case, only the
rechargeable battery of the charging case is being charged.
The LED of the charging case displays the charge status:
LED
pulses
yellow
lights up
green
flashes
red
If the LED does not light up:
• Clean the contacts on the earbuds and in the charging case
(> 33).
• Clean the USB-C socket of the charging case.
• Charge the rechargeable batteries of the earbuds and the
charging case (at least 30 minutes) until the LED lights up
again.
Connecting the earbuds to a Bluetooth
device
To be able to use the Bluetooth wireless connection, you must regis-
ter both devices (earbuds and e.g. smartphone) via the device set-
tings of your smartphone. This process is called pairing.
If operation differs from the steps mentioned, also refer to the
instruction manual of the Bluetooth device you are using.
When you switch on the earbuds for the first time after initial
charging, they automatically switch to Bluetooth pairing mode.
Charging case WITH
earbuds inserted
... earbuds and
charging case are
being charged
... earbuds and
charging case are
fully charged
... charging error/
battery error (> 34)
SPORT True Wireless | 15
Using the earbuds
Charging case
WITHOUT earbuds
inserted
... charging case is
being charged
... charging case is
fully charged
... charging error/
battery error (> 34)