Dell Vostro 14 3430 Owner's Manual page 29

Low blue light: Dell ComfortView software technology reduces harmful blue light emissions to make extended screen time easy
on your eyes.
To reduce the risk of eye strain, it is also recommended that you:
● Position the display at a comfortable viewing distance between 20 and 28 inches (50 and 70 cm) from your eyes.
● Blink frequently to moisten your eyes, wet your eyes with water, or apply suitable eye drops.
● Look away from your display, and gaze at a distant object at 20 ft (609.60 cm) away for at least 20 seconds during each
break.
● Take an extended break for 20 minutes every two hours.
Specifications of Vostro 14 3430 29