Using the Cree XM-L2 LED, the Olight S2R produces up to 1020 lumens of light. The S2R utilizes a 18650 rechargeable battery that can be charged using the included USB charging cable. The S2R side switch lets you move through the 5 light modes. Light weight at just 3.58oz and made of a hard anodized aluminum body make this a great choice for you EDC or backpack. Light modes include 1020, 500, 120, 12, and 0.5 lumens making this a very versatile light for camping, hunting, law enforcement, or security.