Detailed Product Description Outdoor mini camcorder Waterproof Sports Camera, ATC3K sport helmet camera gun camera- ,- Small ... Supporting 4G SD card- ,,,,,,- Hand-free, suitable for use in sports like swimming, riding, hunting, surfing, boating - ,,- Can easily be ... else- - Powerd by 2*AA battery, easy change- - Waterproof under 3m deep water,especially suitanle for swimming, surfing, underwater ...