... alloy shell ,ake sure the good heat dissipation and low lighting decay2 LED lighting source,use the inported high power ... led chips (Taiwan Epistar / Edison / CREE ),long life span, low consumption, pure color, no stroboscopic.3.ojection distance,15-50m4Lens ... and both end with silicone cushion)6.LED power supply: low voltage switch gear & famous brand powr supply; and the inner waterpoof ...