Why does it take time for sound to play through my Ear (a) after they've connected to a device?

Due to compatibility issues with Bluetooth Fast Pair and Dual Connection features of some device systems, there may be occasional delays in sound output when you switch music channels or try to connect your device. The issue may occur with TWS Bluetooth earbuds on the market. This is a normal phenomenon and does not indicate any abnormality with the earbuds. Please feel free to use them with confidence.