The phone itself is pretty compact at 4.17 inches tall by 2.17 inches wide by 0.55 inch thick and 3.99 ounces. The HTC Tattoo features a 2.8-inch QVGA resistive touch screen and comes with a 3.5 millimeter headphone jack, a microSD expansion slot, and a 3.2 megapixel camera. Wi-Fi and Bluetooth are also onboard. Of course, as an Android phone, you get access to Google's various services, including Google Maps, Google Mail, and the Android Market.