Perhaps as a result, he almost invariably read the enthusiasm of others as a yellow caution light, and he took their misery as a sign of hope.

It has glow caution light, nightlight, direct current output function that could emergency charging for mobile phone, digital goods and so on and has FM radio function.

Researchers caution that the use of such devices are particularly harmful to the sleep-onset process, since the artificial light can suppress release melatonin which is our sleep hormone.