Bluetooth handles that have been used in Android and Apple systems have no delay, and there are several reasons for the delay:
1, there is a strong interference source nearby, that is, the so-called signal interference causes instability and produces the feeling of delay.
2, the mobile phone itself is relatively card, there is an Android phone because the system card has been replaced, and it is intended to be used as a game machine. As a result, Kaka Kaka burst into flames, and his mood was agitated. As for the Apple system handle, it plays smoothly.
3. The distance is too far. In fact, if used on mobile phones, this can be ignored. Even the mobile phone has a distance of 1 meter.