Ultraviolet light brings out what ordinary light does not show: leaks, stains and markings. There are only a few models here, and the main difference lies in the wavelength — 365 nm gives a cleaner glow and less of the blue light that bothers the eye, while 395 nm glows visibly more. Some lamps charge over USB, so there is no hunting for batteries; besides Superfire, Lepro is represented too.
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Ultraviolet light brings out what ordinary light does not show: leaks, stains and markings. There are only a few models here, and the main difference lies in the wavelength — 365 nm gives a cleaner glow and less of the blue light that bothers the eye, while 395 nm glows visibly more. Some lamps charge over USB, so there is no hunting for batteries; besides Superfire, Lepro is represented too.