Photo is a little out of focus. The larger one is OMS and has a glass lens, the smaller one is scuba pro and has a plastic lens. The plastic lens is scratched quite a bit but it is perfectly viewable. The smaller one has a six inch hose and is from one of my stage regs that I sold. I have long hoses if you prefer that I can put on. I have the rubber cover for the small one if you want it but I never used the covers. $50 each. email me at hgstone@aol.com