Zhao Yitian

Excellent! Thanks Chris.
One more thing, you can use multi WIDI BUD with multi Bluetooth MIDI devices in the same time without adding latency. The WIDI BUD is designed for professional users.
By the way, Windows did not support multi clients with MIDI yet (new Windwos 10 API did but need to be implemented in each music software), so that is why you need to close WIDI PLUS first then use other DAWs.