Question 1

What is the Kelvin rating of this bulb? Thank you.

Accepted Answer

Philips Model 455717 is 5000K and is in the listing.  Its a constant battle to keep listings accurate as some sellers tweak the listings.

We have even uploaded photos of the bulb, the packaging (what each bulbs package looks like - as each bulb is individually packaged)

Also uploaded are the light output color spectrum, as well as the beam formation - data from Philips.

Question 2

Can this bulb be used in an enclosed can light fixture with glass lens?

Accepted Answer

There's some conflicting information here, but LEDs will die much faster if it overheats.  Yes, it will work, but it won't last anywhere near the rated number of hours.  I know this from flashlights, some small 1x18650 powered flashlights can produce more lumens than this light bulb, but only for 30 seconds because it will overheat quickly (limited dissipation in a small flashlight).  Many people have blown up their custom flashlights for this reason.

Question 3

Looking  at the lumens figures, do the "soft white" bulbs give as much actual light as a traditional 100w incandescent bulb or a 60w?

Accepted Answer

I can only speak for the 100W equivalent Philips bulb. We replaced the traditional incandescent 100W bulb in our typical lampshade lamps. My wife said she could see no difference between the actual light provided by the two bulb. However, when I replaced some of the bulbs in the recessed lighting in the kitchen (leaving some of the incandescent bulbs in for comparison) the Philips bulbs made the incandescent bulbs appear dim. LED lights are somewhat directional, in that most of their light is directed upward toward the top of the light bulb. Thus, this would explain why the bulbs in the recessed cans (which are screwed in upside down) outperformed the incandescent bulbs.

Question 4

Is the Daylight brighter?

Accepted Answer

The Really, Really correct answer is that both answers are correct.  Yes, technically speaking, both bulbs are the same brightness, which is measured in lumens.  The 5000K bulbs will appear brighter (to humans at least) because the human eye is, for lack of a long explanation, generally more sensitive to the green area of the color spectrum, and the 5000K bulb's light output is closer to that area than is the 2700K bulb.

ASIN	B0143925WY
Additional Features	Color Code 850 [ CCT of 5000K (2)], Correlated Color Temperature (Nom) 5000 K, Lamp Current (Nom) 135 mA, Mechanical & Housing: Bulb Finish Frosted (FR), Nominal Lifetime 10,950 Hours, Starting Time (Max) 0.5s, Temperature: T-Case Maximum (Nom) 95 °C
Best Sellers Rank	#25,575 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,708 in LED Bulbs
Brand	PHILIPS
Brand Name	PHILIPS
Bulb Base	E26
Bulb Shape Size	A19
Color	Daylight
Color Rendering Index	80
Color Temperature	5000 Kelvin
Connectivity Technology	Normal bulb
Control Method	App
Controller Type	Push Button
Customer Reviews	4.5 out of 5 stars 916 Reviews
Global Trade Identification Number	50046677455601
Incandescent Equivalent Wattage	60 watts
Included Components	bulb (4)
Indoor Outdoor Usage	Indoor
Item Dimensions W x H	2.4"W x 4.2"H
Item Type Name	Philips LED Non-Dimmable Frosted Light Bulb
Item Weight	4.96 ounces
Light Color	Bringht White
Light Output Maximum	800 lumens
Light Source Operating Life	950 hours
Light Source Type	LED
Light Source Wattage	8 watts
Light Type	LED
Manufacturer	Philips Lighting
Manufacturer Part Number	455600
Manufacturer Warranty Description	3 year warranty, see package for details.
Material Type	Brass
Model Name	Philips LED Non-Dimmable Frosted Light Bulb
Model Number	455600
Number of Items	4
Package Quantity	1
Power Consumption	60 watts
Power Source	A/C
Shape	A19
Special Feature	Color Code 850 [ CCT of 5000K (2)], Correlated Color Temperature (Nom) 5000 K, Lamp Current (Nom) 135 mA, Mechanical & Housing: Bulb Finish Frosted (FR), Nominal Lifetime 10,950 Hours, Starting Time (Max) 0.5s, Temperature: T-Case Maximum (Nom) 95 °C Special Feature Color Code 850 [ CCT of 5000K (2)], Correlated Color Temperature (Nom) 5000 K, Lamp Current (Nom) 135 mA, Mechanical & Housing: Bulb Finish Frosted (FR), Nominal Lifetime 10,950 Hours, Starting Time (Max) 0.5s, Temperature: T-Case Maximum (Nom) 95 °C See more
Specific Uses For Product	Indoor use only
Style Name	60-Watt Equivalent
Unit Count	4 Count
Voltage	120 volts
Wattage	9
White Brightness	800 lumens

Philips LED Non-Dimmable A19 Frosted Light Bulb: 800-Lumen, 5000-Kelvin, 9-Watt (60-Watt Equivalent), E26 Base, Daylight, 4-Pack

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