LED bulbs is a energy saver light about any other bulbs , reason to choose LED cool daylight consistent brightness , no fade instant light constant light, during the whole lifetime long lifetime 5 years ( based on 7h/day usages) . LED is a upto 80? energy saving than normal incandescent bulb. Input working range 170-270 voltage.
Last upto 8 times longer than normal incandescent bulb. No Mercury environment protection . This is his UNSTRUCTIONS - Mercury free, high quality light, low carbon footprint, low heat does not fade color, direct replacement for standard bulbs, instant start to maximum brightness.
Warning- switch off power before installation , cannot be used as emergency light, not dimmable, the working environment temperature is -20? °C -50? °C. Thank you. This is a very useful .