Promotion packages Take advantage of our special promotion and secure one of the gifts listed below free of charge when you buy 3 PU's (á 6 pairs) of System 75 ear studs - FREELY SORTED ACCORDING TO YOUR CHOICE. Subgroups . With the purchase of 3 PU's (á 6 pairs) Silence 75 ear studs FREELY ASSORTED ACCORDING TO YOUR CHOICE - and receive the promo package “European Championship Fan Package” (cont. 16 parts) for FREE during the promotion period!