I'm selling a 2 month old Dive Rite Optima Rebreather with Petrel Electronics for $7500 INCLUDING INSTRUCTION. This unit is my personal unit used only in fresh water. It's got (4) two month old AI Sensors, an unused Dive Rite CCR Wing, an unused Transpac Harness, the new and improved smaller DSV that was recently released. Just add bottles and you're ready to go. Add in $600 and I'll even throw in the Packable Scrubber. That's right, you can go with EA Cartridges OR Packable Scrubber. I challenge you to find a better deal anywhere on a Dive Rite Optima.