Amazon.com unveiled a hand held digital reader on Monday that it hopes will boost sales by helping its customers download books, newspapers and other media.

The $400 hand held reader took more than three years to develop marking the company's first entrance into the world of digital devices.

The new product is set to face competition from Sony's $300 Reader and other multi-purpose devices such as Nokia's Tablet and Apple's iPhone.

Amazon reader will be include unlimited access to a nationwide advanced wireless network operated by Sprint that allows users to easily buy e-books and download them in a short time.

In addition the device will download digital versions of subscription newspapers and magazines.

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