it's the same technology as the hyperdunk + shoe. I almost got that, except I do not use an iphone and I think you need one to use the app that measures your vertical. It seems pretty accurate though. My regular hyperdunks are just badass so I'm satisfied. And I have a good estimate of my running vert. However if I was playing ball all the time and practicing dunks I may have gotten the +.
edit: also why are you posting this in the strength, power, reactivity, & speed discussion thread? There are threads elsewhere where you can post random things like this.