This red light bulb has 660nm of deep red light and 850nm of near infrared, the optimal wavelength of light. Designed to deliver infrared heat to the body. Infrared heat improves blood flow and ...

It's important to note that this doesn't mean the Navy is installing red colored bulbs in its submarines. The light being emitted has to emit a red wavelength of light, not simply be colored red.

However, choosing the best smart light bulb for your home can be a challenge, as there are tons of options on the market. Many of them share similar specs, but not all of them are reliable.