... glass6.Maintenance free,easy installation7.Low Power Consumpition,high intensity8.Solid-State,High shock/vibration resistantApplications:1. Bus, ... Over 7 years of industry experience in LED manufacturing·Technology from Japan ·High luminous efficacy: 65 - 85 lm ... controllable (low voltage models) ·ISO,ROHS,CE,UL qualifications ·1-3years warranty Japan Advertising High bright 50w led light with 4200lm ...