Like very nearly every 3D light I own, my Greatlite 3D (got at a welding supply house) has 4C and Writeright.
If I recall correctly, it has a "reverse" switch on/momentary/off but it's at home and I'm not.
As I recall, it is decently bright and decent of beam with 4C and Writeright.
As to modding it... I wouldn't have the foggiest notion!