LECTRO VL-2i1TWS Manual De Instrucciones página 13

Indicator light for charging case
Fully battery
Charging
Description
Wireless Version: V5.2+EDR
Transmission range: ≤10M
Frequency: 20HZ-20KHZ
Battery: 28 mAh/each earbud
Charging Case: 1500 mAh
The white light flash slowly when charging, white light
bright when the battery is full.
1. Charging voltage is 5V, charging time is around 2 hours,
please do not overcharge.
2. If no use for a long time, please charge earbuds one time
each month, which can prolong the life of earbuds.