Despite all the marketing hoopla, there is no such thing as a 'long' or constantly blooming azalea. A robust spring flowering and then for any reblooming selections, a modest or scattered late summer or fall rebloom......if you are lucky. Perfecto Mundo azaleas are no different. Even the breeder confirms this.

Also, pretty iffy for a zone 6b. Not a risk I'd invest much time or money on.