The Kindle features a 6″ diagonal, 4-level grayscale electrophoretic display (E Ink material) with a resolution of 600×800 pixels (167 ppi), although the largest graphic image that can be displayed without being resized is 450×550 pixels. It measures 5.3 inches × 7.5 inches × 0.7 inches (134.5 mm × 190 mm × 19 mm) and weighs 10.3 oz (295 g).
The Kindle’s internal storage capacity is 256 MB, shipping with 180 MB free. A SD memory card expansion slot is present, officially supporting up to 4GB which implies support for SDHC. It has 64 MB of RAM. The battery lasts roughly two days with wireless on, and one week with wireless off. The battery charges in about two hours.
A USB 2.0 port (mini-B connector) is available for connecting to a computer (where it acts as a USB flash drive). The Kindle features a headphone jack and one-year warranty. The device runs on a modified version of Linux based on the 2.6.10 kernel.