front LEDs tobe ULTRA VIOLET LIGHT EMITTING LEDs with wavelength between 365 & 385 NM. this required because the torches are to be used for Currency Notes Verification/fake Note detection. Important Security Features of Currency notes aren't visible to naked eyes not under any other color like Blue, Red. Yellow, Purple, /Green or white lights. They are visible only under ULTRA VIOLET LIGHT of above wavelength.
Buy blue LED torch [India]
