The switch does not currently support connecting to the keyboard through Bluetooth matching, and can only connect to the controller and headset and stereo through Bluetooth. And in the absence of other factors to interfere with the case of Bluetooth headset sound will not appear significant delay. Even in fast-paced action games, it's almost impossible to feel. If there is a significant delay or noise, you can try to re-pair the Bluetooth headset. Or connect the Switch to a WIFI signal in the 5GHz band.
Connect through Bluetooth function, you can input letters and Chinese characters after matching