Very light weight made from carbon fibre, its easy for the operator to lift it. It has a sealing clear Perspex lid which when sealed up is waterproof on the surface. You can see down into it and also look at any monitors that are attached to the camera. It has two types of lenses. The first is using Ultra clear lead free glass for perfect optics or optical acrylic. It has Preston command lead 50m which is waterproof