I've accumulated four pairs of earphones because I kept buying replacements whenever I forgot mine at home. I've only used each pair for about an hour during my lunch break, and at most, twice. The sound quality is so-so. The purple Type-C earphones are 500 yen (I have two of the same kind). I forgot the price of the black Type-C earphones. I think the blue 3.5mm jack earphones were 500 yen. The extension cable and the conversion cable are 100 yen each.