Sennheiser MOMENTUM True Wireless 3 Noise-Canceling In-Ear Headphones (Graphite) - Manual (Page 8)

Product overview
8 | MOMENTUM True Wireless 3
Overview of the LED indications of the
charging case
When a USB cable is connected or the charging case is placed on a
wireless charging station, the LED of the charging case permanently
displays the charging process:
If you open the lid of the charging case and no USB cable is con-
nected or the charging case is not placed on a wireless charging sta-
tion, the LED of the charging case displays the battery charge status
or the charging process of the earbuds. If you close the lid of the
charging case, the LED will go off after 5 seconds.
LED
Charging case WITH
earbuds inserted
Charging case
WITHOUT earbuds
inserted
pulses
yellow
... earbuds and
charging case are
being charged
... charging case is
being charged
lights up
green
... earbuds and
charging case are
fully charged
... charging case is
fully charged
flashes
red ... charging error/
battery error (> 38) ... charging error/
battery error (> 38)
5s