Raul, the Ultra version of the clock is the evolution of the original Clever Little Clock that came out around 9 years ago. The Ultra clock, unlike its predecessors, includes an anti-static spray that is applied to the surface on which the clock sits. To eliminate the effects of the clock take the clock outside, say on the back steps. It all depends on the system but most customers are easily able to hear the clock's effects when placed anywhere in the room. Also, please note the time displayed by the clock is set up to be later than your local time and should not be re-set. The clock is based on theories and products of PWB Electronics who used to have a clock a long time ago and who gave me permission to make the Clever Little Clock. The theory if how the clock operates involves "information fields" and how they can degrade our sense of hearing.
Cheers, Geoff at Machina Dynamica