: To adjust the focus, please pull out the midway led of the headlamp, please do n't rotate the frame., scintillant Lighting For Indoor And out-of-door Activity appropriate for out-of-door hiking, camping, caving, hunting, fishing, boating, mining, climbing, running, cycling, dog walking, reading, household searching, construction lighting With adaptable focus function, it also can be used for precision work -LRB- watch or clock repair -RRB- or auto repairing or craft work that requires attention to detail. snug to Wear Straps are to wear and simplified to adjust, and the battery compartment that is covered with rubber seal as well as first fictile plate holding the lamp do not cause any discomfort. Product : Model : Garberiel V25 fluorescent Source : 1 * T6 +4 * XPE fluorescent Output : Maximum Output Of 8000 Lumens Materials : Made of Aluminum Alloy and ABS materials Power Source : 2x 18650 3.7 V 5000mAh reversible li-ion battery Package Content : 1x head torch headlamp 1x Car charger 1x US Wall Charger 2 x 3.7 V 18650 reversible Batteries .