have you followed this thread?.... this is at least the third time this has been posted here. it is a USCG approved LED device.When you consider the electronic LED flares can work for hours compared to seconds the advantage is obvious. It would be nice the see the USCG certify one of the red LED ones for use instead of the old flares.
its not really a flare, and I dont see any way they can shoot sparks out of a long lasting and properly working LED device, or how they could ever make an LED as "eye catching" as a pyro flare, but until they do, what is shown in the link is the only option so far