lógico, solo mira los vídeos: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-nshQIztXkM8.html ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-46FkinxvGl8.html.....minuto 0.45, 1:18, ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-OrSfKNRJCCw.html......todo se maneja electronicamente