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Using the earbuds
14 | ConC 400
Charging the rechargeable battery of the
earbuds and the charging case
1
1. Open the lid of the charging case by overcoming a slight magnetic
resistance and insert the left earbud into the left charging com-
partment and the right earbud into the right charging compart-
ment.
The earbuds are magnetically pulled into the charging compart-
ments.
2. Make sure that the charging socket is free from moisture and con-
tamination.
3. Connect the USB-C connector of the USB cable to the USB-C
socket of the charging case.
4. 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 display of the charging case displays the charge status:
LED
flashes red
flashes green
lights up green
lights up red
If the LED display does not light up:
• Clean the contacts on the earbuds and in the charging case
(> 34).
• 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 display
lights up again.
2
USB-C
Status
... charging case is being charged
... charge status < 10 %
... charging case is being charged
... charge status > 10 %
... charging case is fully charged
... charging error/battery error (> 35)
3
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