Friends divers do not be scared by the price of this mini lamp. The little beast is fitted with an LED CREE whose reputation is well established. I just returned from a week of diving in the area 0-20m, verdict: Outstanding! 1 hour full power of autonomy, the day visibility beam; Night lighting is a football stadium! She concurrency in terms of intensity of high-end models at 150-200 euros. Its simplicity is its strength: a ring or unscrew a screw for ignition. No magnetic button or other system requiring a special maintenance. Think well to put a shot of grease on the joints. Its main drawback: its power precisely. I intend to place a flash diffuser to homogenize the beam, as this video images grid in the center. The gadget is attached wrist but ultimately it is good, it is taken every dive without being bothered. Otherwise even flashlight she going very well in the pocket.