 Hi, I'm Carl Franzen with The Verge. We're here at CES 2014 going hands on with Reebok's new check light, a head impact indicator. Reebok's new check light, which was unveiled over the summer, contains a gyroscope for measuring rotational motion and an accelerometer for measuring linear motion. Combined, they activate a microprocessor on the other side of the check light, which displays a different light depending on the threshold of the impact. Green is a low impact, it's fine. You can keep playing whatever sport. Red, that means you need to get checked out. You should go see a doctor or go to the hospital. Yellow light would also indicate that you should probably have somebody take a look at your head to see if you were concussed or had some other sort of head trauma. Check light slides into a cap that you can wear underneath the helmet like this. There we go. Harder. All right. Awesome. Awesome. Awesome. Awesome. Awesome. Awesome.
 Hi, I'm Carl Franzen with The Verge.
 We're here at CES 2014 going hands on with Reebok's new check light, a head impact indicator.
 Reebok's new check light, which was unveiled over the summer, contains a gyroscope for
 measuring rotational motion and an accelerometer for measuring linear motion.
 Combined, they activate a microprocessor on the other side of the check light, which displays
 a different light depending on the threshold of the impact.
 Green is a low impact, it's fine.
 You can keep playing whatever sport.
 Red, that means you need to get checked out.
 You should go see a doctor or go to the hospital.
 Yellow light would also indicate that you should probably have somebody take a look
 at your head to see if you were concussed or had some other sort of head trauma.
 Check light slides into a cap that you can wear underneath the helmet like this.
 There we go.
 Harder.
 All right.
 Awesome.
 Awesome.
 Awesome.
 Awesome.
 Awesome.
 Awesome.