... hours under narmal use, especially for officelighting.4. Optimized light extraction system delivery high lumens.5. No RF interference, ... narmalfluorescent tube.9. No flash, AC driving, stable light, protect eyes.10. Good color vision, color temperature can be adjusted from ... LED rigid bar, LED tube, LED street light, LED down light ,LED spot light,LED bulb,etc.With reliable quality and competitive ...