Amber-Only 1600K Light
Amber Light + says the light removes 99.95% of blue light, producing an amber tone at 1600K. For comparison, a warm white household bulb usually sits around 2700K and daylight-style white LEDs around 5000K to 6500K, so this is far toward the candle end of the scale. The reason it matters is biological rather than aesthetic: light in the blue range is what the eye's melatonin-regulating cells respond to most strongly, so removing it lets you read without sending the brain a daytime signal. Lighting quality is by far the most praised thing about this light, and the amber tone is described as soothing, cozy and gentle on the eyes. The trade-off is that there is no white mode at all. Colored illustrations, maps and highlighted notes are hard to read under amber, and anyone who also wants a crisp light for detailed daytime work will need a second light.