Easy to use: Launch any digital poi and all other pois will be launched together by wireless radio control.
This option is useful for sync start with the music if you have 2 sets of poi or more. Or if you have Doublestaff.
Function of full sync control for Doublestaff - control all 4 ends of Doublestaff using only one of them.
Price is for 1 set (2 devices).