The mobile cassette adapter easily connects your iPod device, portable MP3 players, CD players, casstle players, PCs, or taptop to your car stereo, through your car\'\' s in-dash cassette players. A great way to listen to your portable audio device, this innovation plugs your portables into your cars in-cash cassette player. It works with your MP3 players, CD players, or cassette players, and with your PC or lap-top to deliver high-quality sound on the road anywhere you go. The adapter reduces noise by automatically maintaing the correct tension within the cassette deck as you drive, so you get an outstanding mobile audio performance. Its front-and side-loading cassette players allows easy placement of your audio player with 4\'\' cable, including a 3.5mm connector plugs into your MP3 palyers, CD players, cassette players, PCs or laptop, with inner-magnetic and shake-resistant design self-adjusting spring head and silent mechanism. Mini-plug inserts into CD or MD player\'\'s headphone jack. Specifications: 1) Fequency: 30 - 20,000Hz 2) Plug: OD3.5DT.P/NI 3) Connect link length: 1,200mm