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Rambler TWSNB2Pro full charge needs to connect the charging box to the charger for charging, when the LED indicator on the charging box is all lit up, it means that the earphone charging has been completed, and the earphone's power is full at this time.
The Rambler TWSNB2Pro supports fast charging technology. In fast charging mode, the charging case can be charged for 1 hour after connecting to the charger for 10 minutes.
First look at your Bluetooth headset branch does not support fast charge. If you support fast charge, you can use it, if you don't support it, you can use fast charge to rush up.