Mark Zuckerberg built a glowing sofa bed for his wife

Facebook manager Mark Zuckerberg says he has built a glowing wooden box that helps his wife to sleep through the night when she cares about her children.

The invention – called a "sleepbox" – gives a dim light between 6 o'clock and 7 o'clock, so Zuckerberg's spouse Priscilla Chan knows that the couple's two little daughters are waking up, without having to check the phone.

"Being a mother is difficult, and since we have had children, Priscilla has had a hard time sleeping that night," wrote Zuckerberg, 34, in an Instagram post.

"She will wake up and check the time on the phone to see if the children might wake up soon, but then the time tensions know her and she can not fall asleep. "

Because the box does not show the time, Chan can now fall asleep without fear of sleeping too long. And the light is visible enough to let her know when it is okay to wake up, but weak enough that" will wake her if she is still asleep, "said Zuckerberg.

The billionaire CEO said he shared his creation in case an entrepreneur wants to run the idea and build the boxes for a larger audience.

" As an engineer, build a device to help my partner sleep better is one of the best ways I can think of to express my love and gratitude, "he wrote." A bunch of my friends have told me they want something like that. . "