occiam K23 - Earbud Charging; Low Battery Alert; Earbuds Charging

Earbud Charging
Low Battery Alert
When the battery power is less than 10% (and the voltage is lower than 3.3V,
a voice prompt "Low Battery"will be advised. After several times of low
battery alert, the earbuds will shut down as normal.
Earbuds Charging
Put the earbuds into the charging case, they will power off & be charged.
When the earbud led indicator flashes white light, it means that the earbud
is being charged from the charging case, meanwhile, the led bar for earbud
on the charging case flashes white light from 1st grid to 4th gird repeatly.
Once fully charged,the earbud led indicator will turn off, and the led bar for
earbud on the charging case will be off too.
Flash during charging;
Turn off once fully charged.
Charging Warning
1. After using a period of time, the earbuds don't charge or even can't turn
on because there may be oxidized layer or something else on the charging
connector or charging pin.
You can handle this problem by using alcohol rag to clean the magnet
connector on earbuds and charging pin on the charging case.
2. Earbuds can automatically turn off immediately meanwhile start charging
when you put back into charging case. Also they will automatically power on
and pair when being picked up.