Pairing (2 devices): 		4 seconds MFB ("pairing"), select MPOW Crescent, opt. 0000 ("connected")
	- clear pairing: 		4 seconds both Volume buttons
DFU: 						4 seconds function button && Volume+ button, insert USB
Answering: 					short MFB button
	- switch to new call:	double MFB button
Rejecting: 					2 seconds MFB button
Hanging up: 				short MFB button
Redial:						double MFB button
Mute:						both Volume buttons
Voice dial:					1 second MFB button
Music:						MFB button
	- next song:			2 seconds Volume-
	- previous song:		2 seconds Volume+