[Sunred]

It is true the shape and appearance of the ring is not a direct redecoration of the actual Denzi ring, but the Denziman logo and the fact that the description on TV Asahi's website, which I primarily base the descriptions off of, classifies that the collection is a microwave "ring" gave me enough reason to organize it as such. Plus the descriptions always allude to the sentai they are referring to.
Similar example is when they had that collection which was a battery cell. Did not look a bit at all like the actual Zyudenchis in terms of form and size, but they appropriated it with the graphic patterns that resembled them.