The Spooky2 is quite possibly the worst ever named multi-functioned zapper device in existence today.
That said, it is quite possibly the most advanced and versatile multi-frequency zapper device on the market to date also. ie, the generator itself costs around 100 USD of which when used in conjunction with the included software can become virtually any type of zapper. Be it, a square wave, contact type, paddle or tube, remote form and so-on and so-forth. Furthermore, the unit can be programmed (via interface) to gang sequences so as to deliver a multitude of frequencies in succession each containing individual settings and parameters, such as amplitude for example. All done via the software interface(USB) or within the unit itself on the included colour screen.
Whatever the case, with units as versatile as this, I'm left wondering how anyone could justify purchasing a zapper such as the one advertised in this thread given how limited these are in contrast to the Spooky2 device which costs hundreds of dollars less.
PS. I purchased a Spooky2 a few months ago to run compare and test the Beck blood purification settings using cut to size tens pads. Of which I was genuinely surprised to find that it was able to reproduce an identical pulse, albeit likely far more accurate given the quality of the frequency generator in the unit itself vs the components used in my own device. However, the unit itself has proven to be beyond anything else I've ever researched or used out there to date.