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How many colors can be displayed on the screen?

  • For 2.9/7.5-inch, it has black & white & red color built-in; or lack & white & yellow color built-in.
  • For 4.2-inch, only black & white.
  • Because more built-in color, the screen needs more time to respond and consumes more energy. 4.2-inch has 4 buttons as user input, it needs a faster refresh rate to change the screen content.
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