2 items
Reduce eye strain with the 20-20-20 rule. Unintrusive reminders to look 20 feet away, for 20 seconds, every 20 minutes. Reduce eye strain with the 20-20-20 rule. This extension reminds you at look at something 20 feet away, for 20 seconds, every 20 minutes. Features customizable timers, audio chimes, and unintrusive notifications.
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