OK this is SERIOUSLY tempting!
The LifeBeam Helmet comes with a better sensor that cribs tech from the company’s military aerospace systems that are used to monitor fighter pilots and special operations forces. The new hardware not only offers more accurate data, but also promises to vastly improve battery life to the point where it can be used several times in a month before you’ll need to recharge. Other tweaks include the addition of Bluetooth 4.0 and ANT+, while the helmet’s shape has been redesigned to better fit your head. It’s available from the company right now, setting you back $200, complete with a limited-edition carbon carry case. Engadget