... ~37X, Plastic shell,metal inner structure Hi Speed Dome Camera (RD-LCH02) Detailed Product Description High speed dome,128 prests,multiple protocol, multiple ... ,18X~37X, Plastic shell, metal inner structure.Indoor High Speed Dome High speed dome,128 prests,multiple protocol,multiple module compatiable,18X ... option: TCP/IP, Fiber optic transmitter, and auto tracking etc. Hi Speed Dome Camera (RD-LHC02)