SUPER BRIGHT! Bought to fly my drones. I'm not sure if you can see this light from 3 miles away (now required by the FAA), but I'd be surprised if you couldn't. Last time I flew about 1.5 hours (in mode #3) with this flash and it has 3/4 battery left. You CANNOT choose which color to flash. Here is the mode selection: #1- once white, then red, then green; #2- double pulse white then red then green; #3 - all colors pulse together about every 3 seconds; #4 - White LED only, always on (flashlight mode). I would recommend these stroboscopic LED lights to anyone trying to "stay within the law" with the FAA when flying drones at night. I also think they would be awesome on the back of a motorcycle or bike. Hope this review helps!