[Product Information]

5000 Lumen Waterproof Headlamp Headlight Flashlight - Zoomable Super Bright , 4 Modes 3 XM-L CREE T6 LED, Rechargeable Batteries, Adjustable - Outdoor Hiking Camping Riding Fishing Hunting One button switch supports 4 WORKING MODES: 1LED/ 2LED/3LED/ flashing.Super Bright and Long Service Time: XM-L T6 LED Bulb,extensive lifetime of LED (100,000 hours)
Adjustable(90 degree) ,Hands-free,Comfortable,4 Modes: Low;Mid;High;Strobe. It is easy to adjust the head strap for your usage. High Quality:Durable aluminum alloy crust, abrasion resistance,waterproof. Internal wiring applies the high efficient booster circuit, working voltage is wide.
PROTECTED BATTERY. 18650 LI-ION BATTERIES HAVE A BUILT IN CHARGING/DISCHARGING SAFETY MICROCHIP, To Prevent The Battery Overheating Lead To Explosion, Fire. Very Safe:The red indicator light on the battery holder plays a good warning role in night walking or cycling!There is a DC input interface and a USB output interface on the battery holder,You can charge your mobile phone like a mobile power supply.
Include: powered by 2 pieces of rechargable batteries(3.7v, 2200 mAh). Wall charger and Headlamp Dedicated USB Cable and battery charger , Suitable for outdoor sport lovers to do some outdoor activities, such as hunting, cycling, climbing, camping, etc.waterproof and heatproof,Up to 4-7 hours working time under full charge. Comfortable, light and stable in use, made of aluminum alloy and rubber.Help any senior navigate in the dark. Make life easier and safer.
Good question, too many people don't understand that there are 2 different types of 18650 batteries. If you look closely at the 6th photo on the product page you will see the little nipple on the end of one of the batteries (each is facing a different direction) indicating that it is a protected battery rather than an unprotected battery which is often used for vape mods.