Well, this is a generic question. Let us analyze it specifically. The earphones were invented to avoid the hazardous radiation from the cell phone. You are connected to the earphone and you talk and do not hold the cellphone near your ears. So, this way, using an earphone has health benefits. But, our ears are sensitive and it is science for us to understand that prolonged usage of earphones to listen to music or talking to someone may irritate the eardrum. At the same time, if there is consistent usage of earphones for prolonged hours of usage may affect hearing sensitivity. Otherwise, all the earphones that are manufactured these days are completely safe.