NA-H4D housing for Hasselblad H4D /H3D systemNauticam sets new standards for underwater image quality by introducing our NA H4D housing for Hasselblad H4D H3D systems. Technical Specifications Depth Rating 70m Weight 4. 3kg Dimensions 370mm (W) 200mm (H) 215mm (D) split The Hasselblad H system Sensors used in H System backs are approximately twice the size possible with 35 mm digital SLRs, featuring more pixels than 35 mm digital systems and providing better resolution and clarity. The pixels in