It's important to note that there may be a slight delay when using Bluetooth headphones, which is a common limitation of Bluetooth technology. In most cases, this delay is minimal and should not impact your experience. However, it's worth mentioning that the delay can be influenced by various factors such as the Bluetooth headphones themselves, the connected device, the audio source, the specific application being used, and even the network conditions.

To fix this issue, please try the following:

1. "Forget" the earbuds in your device's Bluetooth history. Reboot your Bluetooth device such as your phone or computer.

2. Make sure the charging case has enough power and the ear tips are not blocking the charging connectors on the earbuds, and reset the earbuds as per the steps below:

- Place the earbuds into the charging case and keep the case open.

- Press and hold the charging case button for 10 seconds until the LED indicators in the charging case flash white rapidly three times. This confirms that the reset is successful.

When resetting the earbuds, make sure the earbuds are well connected to the charging case, or it may cause the reset to fail. When you place the left and right earbuds in the charging case, there will be white LED indicators that confirm the earbuds are properly connected to the charging case.

If the indicators in the charging case don't light up, please check whether the charging case and earbuds are properly connected, have enough power, and clean the charging pins with a dry cloth.

3. Test your earbuds with a different Bluetooth device, app, and downloaded music/video to see if the problem still persists.

Make sure the Bluetooth device and earbuds are within Bluetooth range, and there is no signal interference between them.

If you have any more issues or your issue has not been resolved, please contact us for further assistance.