Sennheiser SPORT True Wireless Instruction Manual page 30

Using the earbuds
30 | SPORT True Wireless
If no USB cable is connected to the charging case:
▷
Open the lid of the charging case.
The LED of the charging case displays the battery charge status.
If you close the lid of the charging case, the LED will go off after
approx. 30 seconds.
LED
lights up
green
pulses
yellow
lights up
yellow
lights up
red
flashes
red
Charging case WITH
earbuds inserted
... earbuds are fully
charged and the
charging case can
still charge at least
one complete cycle
... earbuds are being
charged via the
rechargeable bat-
tery of the charging
case
... earbuds are fully
charged, the
charging case
cannot charge
another complete
cycle
... rechargeable bat-
teries of the earbuds
and the charging
case are almost
empty
... charging error/
battery error (> 34)
Charging case
WITHOUT earbuds
inserted
... charging case is
fully charged
–
... charging case is
charged less than
90 %
... rechargeable bat-
tery of the charging
case is almost
empty
... charging error/
battery error (> 34)