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.

DescriptionFirst-rate aluminum and acrylic has been applied into manufacturing. With exquisite craftsmanship, this kind of lamp bulb emits bright and soft light. We are sure that you will be great satisfied with our offer. As we all know, LED has been spread among almost all households. Such a kind of energy-saving is undoubtedly the best choice for household use. What we introduce today is also a high-quality product. Easy to install and use, it is durable in use. In addition, this bulb can be applied in landscape lighting, architectural lighting, and entertainment lighting etc. How about making a wise decision right now? ThisZIYUZY-COB-311 GU10 5W 450lm 6500K COB LED White Light Lamp Bulb won’t let you down!

FEATURES

Made of aluminum and acrylic material, practical and durable
High performance, it has super bright white light
High quality ensures its long lifespan
No mercury, No UV, infrared or other deleterious radiation
Low power consumption and energy-saving
Compact and lightweight, easy to install and dismantle
Used for landscape lighting, architectural lighting, entertainment lighting, environmental lighting

Specifications

Brand	ZIYU
Model	ZY-D-320
Material	Aluminum + acrylic
Color	Golden
Quantity	1
Emitter Type	COB LED
Total Emitters	1
Power	3 W
Color BIN	Warm White
Rate Voltage	85~265 V
Chip Working Voltage	3.0~3.2V
Luminous Flux	260 lm
Color Temperature	3000 K
Wavelength	No nm
Connector Type	GU10
Application	Lighting
Dimensions	1.93 in x 1.93 in x 2.17 in / 4.9 cm x 4.9 cm x 5.5 cm
Weight	1.02 oz / 29 g

Package Includes

1 x GU10 3W 260lm 3000K Warm White Light COB LED Light Spotlight Bulb Golden (85-265V)