Photos of SMI Prism closed-circuit rebreather Unit #21. Taken 31/05/2002.
At this time it has over 100 hours of diving time on it.
Aftermarket modifications include: coversion to DIR harness assembly, exchange of Air2 bailout/bcd inflator
for long-hose bailout regulator/traditional bcd inflator, grip tape on bucket, black cable protectors, drysuit inflator, etc.