Barnes & Noble on Wednesday took the wraps off two new models of its Nook e-reader, an Android-based tablet designed to go head to head with Amazon’s Kindle Fire HD and other inexpensive e-readers and tablets. The Nook HD and HD+ cost $199 and $269 respectively.

The HD is a 7-inch tablet with a 1440 x 900 pixel display. The $199 model comes with 8GB of built-in storage; a 16GB version is available for $229. The HD+ is Barnes & Noble has a 9.5-inch display capable of showing 1920 x 1280 pixels.

The HD+ is the first Nook have similar dimensions to the iPad, though its resolution is lower (the iPad’s is 2048 x 1536). The HD+ comes in 16 and 32GB models for $269 and $299 respectively.

Both units can be expanded with more storage capacity using microSD cards, and have built in 802.11n WiFi and Bluetooth. Both run Android 4.0 “Ice Cream Sandwich.”