This waterproof housing case is made of premium plastics. The housing is sturdy, lightweight and well fit with a premium look. Its designed to effectively protect your GoPro HERO4 (also compatible with HERO3 and HERO3 ) above or below the water. Its tested waterproof up to 40 meters (131 feet) underwater. The housing case is sturdily made, can be worn in diving and extreme activities. The flat lens is made of high-quality glass that promises sharp images. A lock buckle and a long screw are included with the housing.