pros. funciona muy bie se regula el volumen y listo. solo hay que pedir mas pilas, ya que si se te elvida apagarlo se gasta la pila en la noche.
cons. hay que cuidar que no se quede en la noche con la pila si no se gasta esta
I am very satisfied with this little thing, it helps me to hear better, a small, inconspicuous, easily configurable and economical.With this instrument you`ve got a cartridges and batteries and a box in which you can store your small items.
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