Silvercrest SFR 2.4 A1 - Manual (Page 39)

SilverCrest SFR 2.4 A1
As soon as you connect the power adapter to the transmitter
cradle and the mains, the transmitter cradle power indicator
(18) lights up green. This is independent of the position of
the On/Off switch (12).
Only use the integrated mains adapter indoors.
Charging the Battery of the Wireless Headphones
Please charge the battery before using the product for the first time. A
charging cycle takes approx. four hours.
Connect the integrated mains adapter to the transmitter cradle and to a wall
outlet (see page 12 – Connecting the Transmitter Cradle).
1. Place the headphones onto the cradle as shown below. The charging
contacts (16) of the transmitter cradle must touch the charging contacts
of the headphones (9).
The power and charge indicator (18) of the transmitter cradle will light
up orange while the battery is charging. When the charging process is
completed, the power and charge indicator will light up green.
If you place the headphones onto the transmitter cradle
while they are switched on, they will be switched off
automatically.