Sena is a company that specializes in Bluetooth-enabled devices. While they already have their own actioncam in the form of the Sena Prism Bluetooth Action Camera, the company still opted to piggyback on market leader GoPro by announcing the Bluetooth Audio Pack. The Sena audio device is a specially-designed adapter for your Hero3 and Hero3+. It lets you record audio, via Bluetooth, of up to 100 meters so you can experience “in the moment audio experiences.” And if you’re not alone in your adventure, you and your friends can record audio simultaneously with the intercom feature of each Sena Pack unit. If you’d like this on your GoPro, you can get the Sena Bluetooth Audio Pack for $99 USD.