Features: 1:Highest luminous flux output 2: Wavelength: 395-405nm 3: Forward voltage: 3.4-4.0V 4: Long Life Span: 50,000 hrs 5: More energy efficiency, 1W for 220mW and 400mW 6: Can pass IR Reflow_260 degree temperature 7: Instant light (less than 100ns) 8: ESD protection.. anti-static elestricity 9: SMT design