Thank you for your question. This bulb is rated at minimum 90 or better CRI.
I brought 4 and they all worked quietly. Not even a single buzz that I could hear.
Not directly, but if you have a hub and switch they should work fine.
Yes ,this can be used for bathrooms with vanity mirrors.
Yes, this has a tough plastic exterior.
No, this product doesn't use a lot of energy. It uses only 5-Watt of electricity and it's up to 87% less energy than a standard 40-Watt incandescent light bulb.
Great question. The answer is no. A "Daylight" bulb is very bright. It is 5,000 kalvin. Use Kalvin as a guide to LED bulbs. Here is a quick cheat-sheet: 5,000 KALVIN. VERY VERY bright. You'll want to use perhaps in a Garage or work room. Not really anywhere else. 3,000 Kalvin. These are good all around bulbs for places you don't intend to relax. Think family room, dining room, general areas of the house. 2,700 Kalvin. This is the soft light incandescent color bulb. These are great for lamps, bedroom, etc. I've found that a 3K bulb on a dimmer is fantastic. Note that watts (60, 40, etc) are impacted by dimming, but the Kalvin stays the same. The Kalvin is the color of the light, the watts are how much of that color the bulb can produce.
No, the input line rating should read 120 volts.