Alldaymall F-928 600 Lumen Zoomable LED Cree Xm-L T6 Camping Torch Flashlight Reverse polarity protection:protect the LED light do not burn out if the battery installed backwards 5 switch modes: high / medium / low / strobe / SOS Support zoom in, zoom out function with adjustable focus. Output bright can come to 600 lumens. Power Source: 1 x 3.7V 18650 1800mAh Battery(Included)or 3x AAA battery(Not Included). Super mini size, bright effect, best suitable for Outdoor Hiking, Camping, Climbing, Cycling, etc.