NEUTRAL ---------------------------AUDIO: La calidad de audio es buena, pero esperaba algo mejor por el precio, no noté mucha diferencia con los audífonos anteriores los cuales son Logitech G231. My work requires me to scroll down a page of text line by line and it will not do this. The battery: Its big, and it lasts all day and often fairly far into the next day. Great case economic and well built. I found this pair on amazon, and they seemed identical, so i took a leap. Der C3 klingt bei kleiner Lautstärke weitaus weniger lebhaft und verleitet schonmal dazu dann temporär die Höhen anzuheben. the rubber acts as a shock absorber . I needed extra wire and used 14 guage everything worked out great. So I bought another one, and another one, and now have three of them. After just over a year of near daily use in our garden, chicken run, dog run, and yard, these little boots are going strong!