18WLED, 1Watt LED per pcs.

18WLED yard bulb be installed in the lampshade as a normal E27 bulb;

80-90lumen per watts.

LED LIGHTING USES UP TO 80% LESS WATTAGE THAN TRADITIONAL FORMS OF LIGHTING

Environmental Impact of Traditional Lighting:

A typical commercial buildings lighting averages 37-50% of its electrical demand.

1 Billion fluorescent lamps are disposed of every year globally. Thats 50,000 pounds of mercury waste. It takes only 4 mg of mercury to poison 7,000 gallons of water. Enough mercury to pollute every gallon of water in the U.S. & Canada. 70% of the nations electricity comes from dirty coal burning plants

If just 25% of fluorescent lighting fixtures in the U.S.
were converted to LEDs, we could:

Prevent the release of green house gases equal to 10 million cars.
Save 15 billion in electricity costs annually.
Decommission 133 coal burning power plants.
Reduce carbon emissions by 158 metric tons & avoid releasing 5,700 pounds of airborne mercury

Advantages of LED:

Energy savings average 50-80%.
70% Efficacy point of a fluoresent is 8000 hours, LED is 50,000 hours.
No maintenance on re-lamping. The storage of bulbs, replacement parts, and the logistics involved are hidden costs to any re-lamping project.
No low-level radiation or damaging UV rays.
Working temperatures of -30 140o celsius.

LED have an average lifetime 6.2 times longer than fluorescents.
Average lifetime return on investment value 300-500% or more.
Better light quality over lifetime; no flickering.
Low heat emanation means money saved on cooling costs.
LED light is very easy on the eyes. Studies have shown that they can cure Seasonal Affective Disorder as well as increase productivity by 3% or 1 hour a week.
Meets or exceeds Energy Star standards in SSL and Meeting the Dark Sky Standards of the IDA.