From Samsung.com: The Samsung Galaxy Tab is a 13.4-ounce, 7-inch tablet that slips easily into a pocket or bag. A virtual QWERTY keyboard and SWYPE technology makes e-mail and texting on the go easy–you can type on the Tab either by using both thumbs or by using SWYPE input technology.
Android 2.2 Platform
Galaxy Tab features Froyo, Google's Android 2.2 platform, bringing you great performance and speed for browsing Adobe Flash Player compatible websites. Fully integrated with services like Google Maps and YouTube you can search, view, and easily download any of the tens of thousands of cool apps available on Android Market.