The latest Nook's price tag - $139 - is a sign that the book seller also is aiming to compete with Amazon and Borders Group Inc. on e-reader prices.
The focus on simplicity means the new Nook's battery can last 2 months, CEO William Lynch said at an event in New York to announce the device. Lynch told the crowd of bloggers, news media and analysts the latest Nook was inspired by feedback from customers - specifically a letter asking why no e-readers were suitable for a grandma.
"The Kindle 3 has 38 buttons. That's 37 more than the all-new Nook," said Lynch, taking a jab at Amazon.com's e-reader, the market's top seller.
The new Nook, to be available June 10, is Wi-Fi only, has a 6-inch touch screen and can hold up to 1,000 digital books. It features the latest E Ink technology, which significantly minimizes flashing that can occur as a user pages through an e-book. Pages seem to melt into each other on the new Nook.
The newest device replaces versions that came before the Nook Color, which still sells for $249. After the all-new Nook's release, the first-generation Nook will sell for $119, and the Nook 3G will sell for $169 - until supplies run out.
Morningstar analyst Peter Wahlstrom said the newest version keeps Barnes & Noble's current on technology, while reserving the company the option to release a more tablet-like device later.
"You don't have to get into the really crowded tablet space right away," Wahlstrom said. The simplified reader - which does not allow users access to an app store like the Nook Color does - can appeal to current Nook owners who want a technology upgrade and to "the incremental consumer who is used to touch screens and used to a more simplified version of technology."
Barnes & Noble Inc. executives said the new device lets readers look up words, highlight passages, search and adjust font size. It weighs 7.5 ounces, 35 percent less than the first Nook, which launched a year and a half ago. The iPad 2 weighs more than 1.3 pounds, roughly three times as much as the newest Nook.
The newest Kindle with Wi-Fi only is almost as light, at 8.5 ounces, but holds more than three times as many books as the new Nook.
Amazon, meanwhile, dropped the price of its Kindle 3G by $25 late Tuesday to $164, but with a catch: The Kindle 3G with Special Offers includes advertisements on the bottom of its home screen and on screen savers. Amazon did the same last month with the Wi-Fi-only Kindle, offering it for $114 rather than $139 if consumers don't mind on-screen ads.
Borders and its Kobo partner said Monday that they are taking preorders for a $130 touch-screen e-reader that launches in early June.
The new device from Barnes & Noble comes after cable TV mogul John Malone's Liberty Media Corp. made a surprise $1 billion offer for the company Friday. Executives did not take questions about the offer Tuesday.
Liberty Media executives have said they are interested in both Barnes & Noble's digital properties and retail stores. In a special shareholder meeting Monday, Liberty CEO Greg Maffei said, "Barnes & Noble has an opportunity to have both a very strong e-reader and then an application on the software side where they can partner with more full-flavored tablets."
Shares of New York-based Barnes & Noble rose 73 cents, or 4 percent, to close Tuesday at $19.32.
AP Technology Writer Barbara Ortutay in New York contributed to this report.