Originally I bought the just for appearance. It was only later I heard from my neighbor that Bernstein also protects against parasites such as ticks and fleas (one constantly learns). In business was not mentioned by the seller. I'm rather critical and curious and have time to wait. To this day, I can not really say that it was the collar, but my Arno Browsed like the underbrush along the way around, if we take long walks in the woods or I jog on the roads and last summer I had to remove not only tick.
But regardless of the collar looks good. Over time, (now almost a year) of Bernstein is polished by wearing, even looks better. Next, I'll get now as a collar for his visit to my parents in Spain. Their Susi constantly has problems with ticks.