GENTOS UT-226R Ultirex 5 Brightness Levels 10500 lumens - 2 hours 5000 lumens - 2.5 hours 1600 lumens - 3.5 hours 500 lumens - 10 hours 100 lumens - 60 hours Quick Flash - 8 hours It seems to be like this. It's very bright, and when used indoors, it's brighter than the room's lights. I think it will be very useful in various situations such as disaster preparedness, night walks, night hiking, camping, and outdoor activities. You should definitely not look directly at the light from the front. Accessories include the box, the main unit, the charger, the batteries in the main unit, and the instruction manual. For those who love camping and the outdoors, and those looking for a bright flashlight, please check it out!!