TREBLAB X3 Pro - Charging the Case; Charging the Earbuds

To charge the case
Be sure to use a 5V DC, 0.5 - 1A adapter or charger. Using a
power source with lower power will increase the overall
charge time. Connect the charging case to the power source
with the USB Type-C cable. The case has 4 blue LED
indicator lights. One indicator light will flash while charging.
The indicator lights will show the charging level: 4 LED = full
battery, 3 LED = 75% of the battery, 2 LED = 50% of the
battery, 1LED = 25% of the battery. To check the charge level
of the charging case, open or ciose the case lid. The case
battery indicator will stay on for 3 seconds. It takes about 2
hours to fully charge the case.
To charge the earbuds with the charging case
When the earbuds’ battery is low, you'll hear the “Battery
Low” voice prompt.
Put the left and right earbuds into the slots in the charging
case. The earbuds will turn OFF automatically. The case will
immediately start charging the earbuds. The red indicator
lights on the earbuds will turn on. It takes about 2 hours to
charge the earbuds. When the earbuds are fully charged,
the blue indicator lights will light up for 30 seconds and then
turn off,