MyKronoz ZeBuds Premium Mode D'emploi page 4

CHARGING
Before the first time use, make sure to fully charge
ZeBuds Premium inside their charging box with the
USB-C cable for about 2 hours.
ZeBuds Premium and its charging case will reach
maximum battery capacity in order to provide you with
up to 20 hours playtime.
ZeBuds Premium can deliver about 4 hours of battery
life. When reaching low battery level, you will hear an
audio indication in your earbuds inviting you to put
them back in the charging case to recharge them.
It will take about 90 minutes to fully charge your
earbuds in the charging case. Once the charging case
is fully charged, you can recharge your earbuds up to
4 times until it reaches low battery.