The Google Pixel 5a has a 416 ppi 6.2 inch display with OLED technology. Due to the OLED technology brighter colors and a deeper black can be displayed. Additionally the integrated battery can be used more efficient. The fingerprint sensor allows fastly unlock of the device without inconvenient methods like numeric codes or swipe patterns.
The back camera has 2 lenses and shoots pictures with a maximum resolution of 16 megapixels. Multi-lens setups are used to optimize the photo by combining multiple pictures into one image. For technology enthusiasts: To calculate the graphics a Yes is used.