The classic game of Simon is a test of memory and reflexes. How long a sequence can you remember, and how fast can you repeat it? The new Optix headset turns it into a test of stamina as well: How long can you stand having flashing lights directly in front of your face? The Optix might resemble an AR or VR headset, but it's nothing of the sort. Subscribe to Engadget on YouTube: http://engt.co/subscribe Get More Engadget: • Like us on Facebook: http://www.facebook.com/engadget • Follow us on Twitter: http://www.twitter.com/engadget • Follow us on Instagram: http://www.instagram.com/engadget • Add us on Snapchat: https://www.snapchat.com/add/engadgetHQ • Read more: http://www.engadget.com Engadget is the definitive guide to this connected life.