Getting started
CX 400BT True Wireless | 11
Getting started
1. Waking up the earbuds and the charging case
and charging the rechargeable batteries
Upon delivery, the rechargeable batteries of the earbuds and the
charging case are in sleep mode and have to be woken up by con-
necting them to a power source once.
▷
Insert the earbuds into the charging case.
▷
Connect the USB-C cable to the charging case and to a USB
power source (> 14).
The earbuds and the charging case are woken up and the
rechargeable batteries are being charged. The earbuds are now
ready for use.
Alternatively:
▷
Press and hold the LED button on the charging case for 3 sec-
onds.
The earbuds and the charging case are woken up and can now be
used.
2. Selecting suitable ear adapters for optimum
fit of the earbuds
The perceived sound quality including bass performance and the
best possible noise cancellation of the earphones depends to a large
extent on the correct fit of the earbuds in the ear.
▷
Test which ear adapter size gives you the best sound quality and
the best wearing comfort.
L
R
USB-A
USB-C
L
M
S
XS
R
L
