Alldaymall F-959 10w 600 Lumen Flashlight White Light Adjustable Focus Zoom Cree Xm-l T6 LED Lampe Outdoor Tactical Light Lamp Handheld Flashlights (Rechargable 18650 Battery) Brown Case 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. Super mini size, bright, blinding effect. Power Source: 1 x 3.7V 18650 1800mAh Battery(Included)or 3x AAA battery(Not Included). Skid-proof design, best suitable for Outdoor Hiking, Camping, Climbing, Cycling, etc.