Charge an emergency flashlight in your bed-side lamp's socket

Here's a new one for me.  This low-heat LED lightbulb from the MoMA Store becomes an emergency flashlight when you need one.  It screws into a standard socket, and it produces as much light as a 40W bulb using only 6W of electricity.  The LEDs will produces up to 60,000 hours of light.  When you need a flashlight, all you need to do is unscrew the bulb, extend the bulb's “neck”, and use the its switch to power it on as a flashlight.  The flashlight's battery is charged while it's screwed into the lamp socket, but I don't see any information about the type of the battery or its power.

The Gadgeteer , Charge an emergency flashlight in your bed-side lamp's socket

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, Charge an emergency flashlight in your bed-side lamp's socket