SecurityIng Zoomable 500LM XML-T6 Super Bright Focus Adjustable LED Lighting Lamp Flashlight Torch (Battery Not Included) Mini palm size and steel body clip, convenient to carry . Cree XM-L T6 LED With 100,000 hrs long lifetime, output luminous flux can be up to 500 Lumens . Uses high quality aluminum alloy, with a very solid construction, with waterproof design . A perfect item for hiking and mountaineering outdoor sports . Power Source: 1x18650 battery or 3 x AAA battery.(Not Included) .