Spyder Arctic Laser is the world's most powerful laser you can legally own. It's got a cool-blue, but blazing-hot, laser beam. This company also makes a flashlight so bright, it can cook an egg and set things on fire.
Everyone might find himself in emergency situation under water somehow, what's better than wearing a life ring on wrist? Once you pull the bracelet when you are in danger, the slim bracelet will rapidly expand to a life ring to keep you afloat