I'm sure you've checked it out in your jurisdiction, but neophytes reading this thread should be aware that blue and/or rearward facing white lights are illegal in some places.
It has 7 modes. I like the ones with projection to the ground (solid or flashing), very good for pitch dark roads. The modes for the main light facing back are too much for me. The USB port is very fragile and easily broken. I knew from these forums long ago that blue lights are illegal, but has there been anyone ever stopped and fined by police for that? I do see some delivery guys using blue lights.