This is light can use like Emergency light,Camping light and lifestyles.
And this ligtt can be charging from and USB 5V 1A.
Because it is have Battery 18650 Li-ion.

Below are all the links can benefit and help you:-

1- DC 3.7V-5V Constant Current LED Light :-
https://www.aliexpress.com/item/32870041831.html?spm=a2g0s.9042311.0.0.6ee54c4dKQZuyj

2- Type-c / Micro USB 5V 1A :-
https://www.aliexpress.com/item/32802292731.html?spm=a2g0s.9042311.0.0.27424c4dPe5n9F

3- 2 Pin 12V Car Boat Toggle Switch Round Dot Light ON/OFF :-
https://www.aliexpress.com/item/32849707463.html?spm=a2g0s.9042311.0.0.27424c4doFTg5M

4- 3.7V 2000mAh Battery ICR18650 Li-ion :-
https://www.aliexpress.com/item/32822122041.html?spm=a2g0o.productlist.0.0.4a9a9d5bBEFT4L&algo_pvid=9dcfae3b-6537-4162-b5c0-7eea035e7ab4&algo_expid=9dcfae3b-6537-4162-b5c0-7eea035e7ab4-50&btsid=8789be31-dab1-4af9-a31f-326bf0fc5071&ws_ab_test=searchweb0_0,searchweb201602_6,searchweb201603_53