This flashlight here offers a perfect, uniform beam: a large, uniformly bright, round circle of light with a significantly brighter again, circular center. At full power, the light is brighter than the sun. With this lamp you could probably illuminate even a cathedral. I've added a picture to illustrate.
The easy to operate with neoprene gloves slide switch allows fortunately a uniform, continuous dimming, so that the light even at close range, can be used for reading the instruments, without being blinded. Overall, the lamp makes a massive, very high-quality impression and is very comfortable to hold. When operating outside the water only a very slight warming can be felt. So there is no reason not to use the lamp also for other applications.
CONCLUSION: I am absolutely thrilled and can really recommend this lamp.