The unit itself is 4.76" x 3.08" x 0.61" and weighs in at just 5. 1 oz. This means that it can fit in you designer jeans or jacket pocket without difficulty. It uses a 320x480 Transflectiver TFT display which is touch sensitive, supports over 65,000 colors, and will put your color cell phone to shame. It is powered by a 416Mhz Intel Xscale processor. The T5 supports MultiMediaCard, SD, and SDIO expansion cards.