Features: Simply?plug?the?3.5mm?jack?plug?into?a?portable?music?player， for?iPod，?CD?player，?pop?the?cassette?into?the?car?radio?cassette and?play?music?through?your?car?stereo Near?CD?quality Car?cassette?decks?that?have?side?tape?opening?and?ANY?MP3?player?/?for?iPod?/?for?iPhone?/?Mobile?Phone?that?has?the?normal?3.5mm?audio?headphone?jack. Note:When?use?it，?please?control?the?volume?under?30%-40%，otherwise?may?take?some?noise. Compatible?with?car?cassette?decks?that?have?side?tape?opening Self-adjusting?spring?head?and?silent?mechanism Mini-jack?plug?inserts?into?MP3?player/for?iPod?or?CD?player\'s?headphone?jack Compact?and?portable Specifications: Original?box:?NO Color:?Black Net?weight:?34g Package?weight:?43g Packing?content: 1?x?Black?cassette?adapter