Blue Tiger Storm Manual page 9

Multi-function
Reject a call
Button(MFB)
Activate Siri and Google Assistant
Volume Up
Volume +
Next Song
Volume Down
Volume -
Previous Song
Microphone Mute
Mute the microphone button
6
Press MFB for 1 second to ignore an incoming call.
In the paired state, hold MFB for 2 seconds to activate Siri and Google Assistant.
Press.
Hold for 1 second.
Press.
Hold for 1 second.
During a call, press button to mute, press again to cancel.