This 200LM CREE Q5 LED Aluminum Diving Flashlight is perfect for diving. This CREE Q5 LED Flashlight can be used within underwater 100m, it is enough. Using advanced technology, this Diving Flashlight produces amazingly bright light. By LED, up to 200LM maximum brightness to meet the specific needs of different. It is powered by two 18650 batteries or two 26650 batteries, high capacity and can remain for a long time. Special treatment, high light transmittance of optical glass lenses which has better ability of deep-water compressive stress. Surface is military level hard anodic oxidation, hard wear-resisting, high way of chemical processing, never fade. This CREE Q5 Flashlight is also can be used for general household use, shining light on hard to reach places when working on machinery, such as a car, during a power outage Safety when walking in the dark, and outdoor activities as well, for climbing, camping, seeking survival, walking, diving, fishing as well as hunting, etc.