Specifications:

UNO R3 and its compatible board can use it directly to display characters, graphics and BMP format images. And touch controlling is available;
library: Adafruit_TFTLCD, Touch Screen and Adafruit_GFX;
Touch screen type: resistive touchscreen.
Touch Pen: length is 9cm;
Resolution: 240X320;
Display size: 2.8 inch;
Operating voltage: 5V;
Logic level: 5V / 3.3V;
On-board 3.3V / 300mA regulator circuit;
Operating current: the maximum is 150mA without TF card;
Use the A0 ~ A4 pins, D2 ~ D13 pins. If you do not use TF card, you can use the D10 ~ D13;
Onboard Micro SD slot, support 2GB Micro SD / TF Card;