We Are Rewind Portable Cassette PlayerLike the old school cassette players, our players have fast forward rewind buttons, a headphone output, a volume control and an audio input so you can create your own mixtapes. But because you have to keep up with the times, we've added a few modern touches. First, we've replaced the batteries with a rechargeable lithium battery that provides up to 12 hours of continuous playback. It's more practical and environmentally friendly. We also built in a