Note:This is Mono channel Specifications: Color:Black Material: ABS Plastic Size: 10x6cm Plug: 3.5mm Jack Cable Length: 110cm Suiu for: For iPod For iPhone MP3 Mp4 Phone PC AUX CD Player 3.5mm Jack Usage: 1.Insert the mini plug into the headphone jack of you player. 2.Turn cassette player on and turn volume to the lowest position. 3.Insert the adapter into cassette deck as you would an ordinary cassette, press play and adjust to desired volume. (note; The volume control of some portable players will not function if you are using the output/ line out jack.) 4.Eject adapter when not in use. ( note: Portable player must be “on” to eject adapter.) 5.Wire can be re-positioned for cassette loading type. Package included: 1x Tape Adapter