SYLVANIA USB-Powered Clip-on LED Lamp

Yes, it's a little on the "blue" side. I just got my 2-pack. Screwed one into the nightlight and turned it on. All it's for is to keep anyone from tripping over the edge of the rug at night. So if it's a little blue rather than a little yellow, it's not such a problem. It's been on for hours. It's true what they say -- since it uses only 0.6 watts instead of 4 watts, most of the glass envelope is running cool, with just a little warmth coming out of the base. The bulb is oriented horizontally; if it were oriented vertically, pointy bulb up, the base would be even cooler. Either way, the cheap plastic nightlight will last longer with this cooler LED bulb. This bulb is labeled "Daylight," but I think it should be labeled "Coolish," 'cuz it's definitely on the blue side. It's only slightly whiter than one of those bluish fluorescent lights from 1975. I gave it all 5 Amazonians because of its overwhelming advantages. The bulb is labeled 0.5 mA, which equals 0.6 watts at 120 volts. Multiply 0.6 by a constant of "8" -- the general consensus -- and that equals the equivalent brightness of a 5 watt light bulb. That means this bulb should be fine if you were happy using a 4 watt incandescent nightlight, but it will run cooler, the little plastic fixture it screws into will last a few decades longer, and the bulb is supposed to last a long time compared to the 4 watt incandescent which is manufactured to burn out if someone sneezes next door. There are also 1 watt LED nightlights, with candelabra bases, with an equivalent light of an 8 watt incandescent if you think a little more light would be good, and it would still burn cooler than a 4 watt incandescent. CRLight 1W LED Filament C7 Night Light Bulb, 2700K Warm White 110LM, E12 Candelabra Base Lamp C7 Mini Torpedo Shape, 11W Incandescent Replacement, 360° Beam Angle, Non-dimmable, 2 Pack. Hmmm, "Warm White" means "on the yellow side," as opposed to cool-blue. Theoretically, if your nightlight had a 4 watt incandescent screwed in, you should be able to switch to a 4 watt LED, and the cheap nightlight fixture would not notice any difference. The current draw into the nightlight fixture would be the same, so the metal conductors won't notice any difference. Since the conversion to light is lots more efficient with LEDs, a 4 watt LED would still be cooler than a 4 watt incandescent. Only difference would be the light output of a 4 watt LED would be about the same as an 32 watt incandescent, i.e., more than a 25 watt incandescent, almost a 40 watt incandescent. That would be pretty nifty coming out of a cheap nightlight fixture. But if you really only wanted a nightlight while you sleep, that much light could be an annoyance. If you start me up, I'll never stop. The latest science thinks that blue light tends to wipe out any melatonin in our brains, making it hard to fall asleep. In the case of a nightlight, then it would make more sense if the LED nightlight were yellowish instead of blueish. But, this is the first generation, and you can't have everything. Update -- 1 year 8 months later. The bulb still works. It usually just stays on 24/7. Sometimes I yank the nightlight out of the wall while it's on, which would certainly have blown out the incandescent bulb. This one just keeps working. I wonder if I could still find the 2nd bulb that came with this one.