This dive light has a soft spot wide and lit overall very bright. The stated 4800 LM are probably more computational nature. But more than 2,500 LM, it creates all! :-) As video or photo people it is due to not completely homogeneous light image (the center is much brighter than the corona) suitable very limited. The light color is neutral and not bluish ... overall very pleasant. The bulb is slender and not too heavy. The magnetic slide switch is straightforward. This allows the lamp intuitively switch, dim and off continuously. The dimmer speaks very softly and allows very little light to radiate. So you can read their own instruments without glare, or check the equipment before the night dive. Dimmed to 100% this small lamp does not hide from the big clunky brand Torches. Supplied with no batteries are included. With 2 Noname batteries of type 18650 the lamp runs on water only a good half hour. With expensive brand batteries it creates an hour at the highest performance level. It is worthwhile to create high-quality batteries for this lamp. Here it is important to make sure that both batteries have a raised plus pole! "Flattops" namely not functions in series. On land, the lamp has a range of 200 yards, and lights easily an entire football field. On the air they would but in continuous operation certainly a little too hot. Between lamp head and battery compartment and in the end cap are each 2 sealing rings. Tip: Because the rings are factory only minimally lubricated, I recommend the sealing rings and their seats with silicone grease zusättzlich and repeated to pocket thin. 100% buy recommendation