light source:	4* XP-G
Luminous flux:	1600LM
light source life:	Above 50,000 hours
material:	6061-T6 Aluminum alloy
Lens:	Optical lens
Switch:	tail touch switch
Work pattern:	100%-75%-50%-30%
Battery:	4*18650  Li-ion battery 8.4V 4.4AH
battery life:	500 times cycle