Super Power Output: Ultra powerful XHP70 headlamp flashlight. 1 x XHP70 LED > 2 x XHP50 LED > 4 x XML-L2 LED > 6 x XML-T6 LED. Most powerful headlamp3 Lighting Modes: High / Low/ Strobe. Brightness at high mode can be up to 10000 lumens. High mode last about 3 hours AS this is a high power (30W) headlamp.Power Source & Power bank: If the switch doesn't work, it means that the battery power if not enough to activate the headlamp. Please fully charged THREE batteries at least 12 hours before using. 20% power in the battery for security transportation is not enough to activate this 6V big power headlamp. Rechargeable headlamp led comes with 3 x 2800mAh 18650 batteries and 1 x USB charging cable. Output interface has power bank function for emergency.Zoomable LED Headlight: Zoom in the headlamp flashlights as flood light and zoom out for long distance. Powerful headlamp aimed for different works purpose.Durable & Comfortable: Super bright head torch made by durable aircraft-grade aluminum and designed with water resistant and shock resistant. With adjustable and elastic head band for conveniently to put on or take off.