Behind-the-scenes with NFL sideline technology: Microsoft and Bose power team communication – GeekWire
Built By Data: NFL Helmet Innovation
Speakers in every player's helmet would eliminate need to huddle - NBC Sports
The NFL's Helmet Tests Are Brainless | WIRED
How Engineers Are Making Football Helmets Safer | Digital Trends
Pittsburgh Steelers Helmet Bluetooth Speaker
Football Players Drill Without Helmets To Curb Concussions
Riddell's Axiom could be breakthrough helmet for football
Aaron Rodgers covered his helmet's earholes to play in noisy Seattle | For The Win
NFL Ends Official Helmet Partnership With Riddell | News, Scores, Highlights, Stats, and Rumors | Bleacher Report
How Do Football Coaches Communicate With Players? - Metro League
How Are NFL Football Players Mic'd Up – Mikingdesign.com
Green Dot On Helmets Of NFL Players
Do Football Players Have Speakers & Microphones In Their Helmet? – Get Hyped Sports
When technology fails: How NFL teams handle helmet speaker outages - ESPN - Green Bay Packers Blog- ESPN
Do Nfl Quarterbacks Have Speakers In Their Helmets? - Metro League
Do football players have speakers in their helmets? We break it down!
Homosexuality in American football - Wikipedia
NFL to end race-based testing in dementia claims - BBC News
N.F.L. Defenses Use Speakers in Helmets to Relay Calls - The New York Times
What are football helmets used for? - Quora
Green Dot On Helmets Of NFL Players
Do NFL Players Have Speakers & Microphones In Their Helmets? - YouTube
