Sync Your Body Clock: Our low blue light lamp helps you keep your body clock in time, by controlling how much blue light it gives off, with three settings for different times of the day: Cool white [5400k] / Super bright For when you want your space at its brightest Neutral white [4200k] / Calm white Kinder on eyes, better for long periods of work Warm white [3100k] / Night mode To help you wind down with the evening