The existing Hero series from GoPro has proven incredibly useful for hunters and anglers looking to film their outdoor adventures. GoPro is building on that success with the Hero4 Session, a lighter, smaller, and more user-friendly introduction to its POV-camera line. The compact cube camera features just one button to turn on the camera and begin recording video with a single touch. And, unlike the previous Hero models, the Session is waterproof without a housing. It's already available for $399 at GoPro.com.