Their comment says "daylight/well lit situations". That sounds good. I must have gotten some bad info on restrilctions on laser power for guns since this one has a rather large power output. I see this laser has a suggested run time of less than 10 minutes. I think that would be because of heat generated, but I would not need to run it that long. Maybe someone will buy this laser and give us a review. I've got another toy in progress and can't spend any more money right now.