How to Use One Earbud?

If you want to use one earphone each time with a same device,

1. Make sure you have previously connected the earphones with your device as a TWS pair first
2. For subsequent use, just remove either earphone which you want to use from the case and it will auto-reconnect to your device.

If you want to use one earphone each time with two different devices,

1. Remove Left Bud ONLY, and Pair it with Device A
2. Put the Left Bud back to the charging case and close the case. Make sure Device A is Bluetooth-OFF! 
3. Remove Right Bud ONLY and Pair it with Device B 
4. Remember which bud paired with which device

Note: Use EACH individually with A / B. (Do NOT remove the two buds from the dock at the same time.)

Related Links: How to get Ace 130 into Bluetooth Pairing Mode?