The Kelvin Scale:

Color temperature is a kind of visible light that has important applications in lighting. The color temperature of a light source is the temperature of an ideal black-body radiator that radiates light of comparable hue to that of the light source. Color Temperature is a measurement in Degrees Kelvin that indicates the hue of a specific type of light source, the symbol of unit is K.

Different color temperature light of source also offer different light color, it will bring you a different feeling:
- Higher color temperatures (5000K or more) are "cold", color is green to blue.
- Moderate temperature (3000-5000K) are "cool", color is white.
- Lower color temperatures (2700-3000K) are "warm", color is yellow to red.

Type of Fitting:

These pictures below display the most common fittings. If you know your fitting, you can easily find the right LED bulbs to match.

LED, Incandescent Bulb and CFL of these three different type

1. Luminous Flus & Application Efficiency

LED	Incandescent Bulb	CFL
1W	25W	-----
3W	40W	5W
5W	60W	12W
7W	100W	24W
9W	150W	30W
12W	250W	40W

LED saves 60% of energy compared with CFL.
LED saves 90% of energy compared with Incandescent Bulb.

2. Comparison table for Power Consumption (8hours/day, 365/ year)

LED	Incandescent Bulb
Electric Consumption	Electric Consumption	Electricity Consumption Ratio
1W8365=2.92Kwh	25W8365=73Kwh	2397%
3W8365=8.76Kwh	40W8365=116.8Kwh	1233%
5W8365=14.6Kwh	60W8365=175.2Kwh	1100%
7W8365=20.4Kwh	100W8365=282Kwh	1328%
9W8365=26.2Kwh	150W8365=438Kwh	1566%
12W8365=35Kwh	200W8365=584Kwh	1567%

LED	CFL
Electric Consumption	Electric Consumption	Electricity Consumption Ratio
1W8365=2.92Kwh	----	----
3W8365=8.76Kwh	5W8365=14.6Kwh	66%
5W8365=14.6Kwh	12W8365=35Kwh	140%
7W8365=20.4Kwh	24W8365=70Kwh	242%
9W8365=26.2Kwh	30W8365=87.6Kwh	233%
12W8365=35Kwh	40W8365=116.8Kwh	233%

3. Comparison table for Working Life-span

LED	Incandescent Bulb
Approx 50000 hours/Pcs	Approx 1500 hours/Pcs Bulb
1Pcs LED	33Pcs Bulb

The LED is much more energy efficient and environmental friendly than Incandescent Bulb and CFL.
LED lighting will be the best decision for you.

DescriptionIt is our duty to save power, water or other precious resources. Light is a necessary for your daily life, so it is a university asked to buy a power-saving and high-quality light bulb. This G9 4W 27 LED 2800-3000K Warm White LED Corn Light Bulb (110V) is much brighter than normal bulbs. Thus you can change the traditional light lamp into a power-saving and eco-friendly one! As for illuminating tools, here we strongly recommend this LED Light Bulb, the perfect choice for the demanding LED light buyers. The light shines soft and bright light shines natural light that protects your eyes when reading, writing or working. Featuring safety, energy saving and user-friendliness, this LED light bulb shines a brilliant light for your life!

FEATURES

Ultra energy efficient replacement of standard lamp
LED light bulb features low power consumption
No mercury, No UV, infrared or other deleterious radiation
Widely used as down lighting or accent lighting in shops, offices and home
This G9 4W LED light bulb is brighter than normal bulbs
You can install this G9 LED light bulb within minutes

Specifications

Connector type	G9
Input voltage	110V
Output power	4W
LED quantity	27 LEDs
LED size	SMD 5050
Color temperature	2800-3000K
Light color	Warm white
Luminous flux	400LM
Material	PC material
Size	2.64" x 1.18"(H x Dia.)
Weight	0.78oz

Package Includes

1 x G9 4W 27 LED 2800-3000K Warm White LED Corn Light Bulb (110V)