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You need 3 type of flashlight.
A primary high power light with bare minimum.
>Atleast 2000 lumens
>400m range
>40000 candela
>Tactical rear button.
>Usb c rechargeable
A secondary flashlight with
>One or 2 AA battery compatibility like MT1A pro, MT2A pro, Fenix Ld22/E12/E20. They give awesome backup of hundreds of hours .
>If you don't have money buy any $5 aa light. What's important is that you have a way to utilise AA batteries to make light.
>You can also buy a headlamp as secondary. I like picrel