Barnes & Noble today introduced NOOK Simple Touch with GlowLight, the first E Ink device with a screen that can glow in the dark.

With a soft, adjustable glow, GlowLight gives bedtime readers just the right amount of light for reading, without disturbing a sleepy spouse.

The device is the first to combine the E Ink display with a 6-inch infrared touchscreen, built-in anti-glare screen for reading in any lit environment, and an evenly distributed and adjustable light for reading in the dark. Weighing just under 7 ounces (200 grams), it is Barnes & Noble's lightest Nook yet.

NOOK Simple Touch is also the lightest NOOK ever, with a long-lasting battery for over one month of reading on a single charge, with the light on.

It is available for pre-order for just $139 at www.nook.com and in Barnes & Noble stores.

While Barnes & Noble is first to market with a glowing e-reader, Amazon is als working on releasing its own e-reader with a glowing screen, according to a recent report.