LG 20MK400H 20" Examiner cover Eyes with ReaderMode.Reducing blue light to help lessen eye fatigue, Reader Mode provides optimal condition for reading. Reducing the flicker position to nearly zero, Flicker safe-deposit box helps you cover your eyes from exhaustingflickers.Dynamic Action Sync mode allows you to incontinently reply to your opponents and attack them without any display pause. It synchronizes your senses with real- time scenes in fast- paced games by minimizing inputlag.Black Stabilizer gives you full visual clarity, indeed in games where you spend a lot of time in the dark. It synchronizes and brightens the darkest areas, so that you can find adversaries hiding in the murk and shootfirst.Mount the examiner to suit your work or entertainment set up.