... sport helmet camera, this hands-free camera with Water resistant. For outdoor entertainment, such as biking,riding,sking and hunting.It ... glass, it is Acrylic. That is much safe, no hurt for men, as Acrylic has not sharp debris when broken. 1. Professional ... .9. Easy to install on helmet and bike. 10. Suitable for biking, skiing, skating, surfing, boating, and hunting.Specifications