How to use: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. Specification:Color: BlackMaterial: ABS PlasticSize: Length: 10cm（3.94in） ,Wide: 6cm（2.36in）Plug: 3.5mmCable Length: 110cmQuantity: 1pcNote:Size for manual measurement, there may be a 0 to 2 cm error, belongs to the normal phenomenon.And due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!Package Included:(Without retail package)1 x Car Cassette Tape Adapter