It’s only the size of a credit card - hence the name - but don’t let that fool you. This speaker, designed by the Japan-based company IDEA, generates sound quality as well as anything we’ve heard, yet has a compact, sleek, and minimalistic design. Lightweight and easy to transport, the card speaker comes in a protective case that makes it easy to bring your music with you wherever you go. Two hours of charge time yield five hours of operating time, so charge it up, slip the device in your back pocket, and set off on your journey - the music won’t be far behind. Available for purchase HERE.