Features
1. Resistive touch screen TFT LCD, 4inch, 480x320 resolution
2. Standard Arduino interface, compatible with development boards like : Arduino UNO, Leonardo, UNO PLUS, NUCLEO, XNUCLEO
3. Onboard stand-alone touch controller, better touching than solutions that use AD pins directly for touch control
4. PWM backlight control, allows to adjust the backlight to a comfortable level
5. Micro SD slot, provides an easy way to store photos for displaying
6. Controlled via SPI, only a few Arduino pins are used
7. Comes with STM32 and Arduino examples, convenient for porting

Key Parameters
1. LCD Type: TFT
2. LCD Interface: SPI
3. LCD Controller: ILI9486
4. Touch Screen Type: Resistive
5. Touch Screen Controller: XPT2046
6. Colors: RGB, 65K colors
7. Resolution: 480x320 (Pixel)
8. Aspect Ratio: 8:5
9. I/O Voltage: 3.3V/5V

Wiki : www.waveshare.com/wiki/4inch_TFT_Touch_Shield